Question 1

At t = 0,a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i -4.0j) m/s2.At the instant the x coordinate of the particle is 15 m,what is the speed of the particle?

Accepted Answer

A)  10 m/s
B)  16 m/s
C)  12 m/s
D)  14 m/s
E)  26 m/s

Question 2

A rock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53 °\degree° above the horizontal.The rock strikes the ground a horizontal distance of 25 m from the base of the building.Assume that the ground is level and that the side of the building is vertical.How tall is the building?

Accepted Answer

A)  25.3 m
B)  29.6 m
C)  27.4 m
D)  23.6 m
E)  18.9 m

Question 3

An airplane flies horizontally with a speed of 300 m/s at an altitude of 400 m.Assume that the ground is level.At what horizontal distance from a target must the pilot release a bomb so as to hit the target?

Accepted Answer

A)  3.0 km
B)  2.4 km
C)  3.3 km
D)  2.7 km
E)  1.7 km

Question 4

Exhibit 4-2
Newton approximated motion in a circle as a series of linear motions,as in the polygon below. A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the acceleration,  \overrightarrow { \mathbf { a } }  ,at point B,is shown by the arrow in A)   \overleftarrow{}  B)    C)    D)    E)    " class="answers-bank-image d-inline" rel="preload" > Assume that the particle moves at constant speed vA from A to B,and at constant speed vB from B to C.
Use this exhibit to answer the following question .
-Refer to Exhibit 4-2.The direction of the acceleration,  a→\overrightarrow { \mathbf { a } }a  ,at point B,is shown by the arrow in

Accepted Answer

A)    ←\overleftarrow{} 135-202 4-14.7 6-23 6-25 0-7.3-7-11-21-11-8 0-13.2.8-15.5 2.5-2.3 1.7-4.2 5.8-5.5 12.5-1.3 4.7-2.7 10.3-4 17-12 48.7-34.8 92-68.5 130S65.3 228.3 18 247c-10 4-16 7.7-18 11 0 8.7 6 14.3 18 17 47.3 18.7 87.8 47 121.5 85S196 441.3 208 490c.7 2 1.3 5 2 9s1.2 6.7 1.5 8c.3 1.3 1 3.3 2 6s2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21-3.7 21-11 0-2-2-10.3-6-25-20-79.3-65-146.7-135-202 l-3-3h399890zM100 241v40h399900v-40z'/> 
B)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the acceleration,  \overrightarrow { \mathbf { a } }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)     
E)     " class="answers-bank-image d-inline" rel="preload" >
C)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the acceleration,  \overrightarrow { \mathbf { a } }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)     
E)     " class="answers-bank-image d-inline" rel="preload" >
D)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the acceleration,  \overrightarrow { \mathbf { a } }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)     
E)     " class="answers-bank-image d-inline" rel="preload" >
E)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the acceleration,  \overrightarrow { \mathbf { a } }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)     
E)     " class="answers-bank-image d-inline" rel="preload" >

Question 5

Exhibit 4-2
Newton approximated motion in a circle as a series of linear motions,as in the polygon below. A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the change in velocity,  \Delta \vec { v }  ,at point B,is shown by the arrow in A)   \overleftarrow{}  B)    C)    D)  &#8598; E)  &#8599; " class="answers-bank-image d-inline" rel="preload" > Assume that the particle moves at constant speed vA from A to B,and at constant speed vB from B to C.
Use this exhibit to answer the following question .
-Refer to Exhibit 4-2.The direction of the change in velocity,  Δv⃗\Delta \vec { v }Δv  ,at point B,is shown by the arrow in

Accepted Answer

A)    ←\overleftarrow{} 135-202 4-14.7 6-23 6-25 0-7.3-7-11-21-11-8 0-13.2.8-15.5 2.5-2.3 1.7-4.2 5.8-5.5 12.5-1.3 4.7-2.7 10.3-4 17-12 48.7-34.8 92-68.5 130S65.3 228.3 18 247c-10 4-16 7.7-18 11 0 8.7 6 14.3 18 17 47.3 18.7 87.8 47 121.5 85S196 441.3 208 490c.7 2 1.3 5 2 9s1.2 6.7 1.5 8c.3 1.3 1 3.3 2 6s2.2 4.5 3.5 5.5c1.3 1 3.3 1.8 6 2.5s6 1 10 1c14 0 21-3.7 21-11 0-2-2-10.3-6-25-20-79.3-65-146.7-135-202 l-3-3h399890zM100 241v40h399900v-40z'/> 
B)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the change in velocity,  \Delta \vec { v }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)   &#8598; 
E)   &#8599; " class="answers-bank-image d-inline" rel="preload" >
C)   A from A to B,and at constant speed vB from B to C. Use this exhibit to answer the following question . -Refer to Exhibit 4-2.The direction of the change in velocity,  \Delta \vec { v }  ,at point B,is shown by the arrow in 
A)    \overleftarrow{}  
B)     
C)     
D)   &#8598; 
E)   &#8599; " class="answers-bank-image d-inline" rel="preload" >
D)   &#8598;
E)   &#8599;

Question 6

A car is driven 1 200 m north at 20.0 m/s and then driven 1 600 m east at 25.0 m/s.What is the magnitude of the average velocity for this trip?

Accepted Answer

A)  16.1 m/s
B)  22.6 m/s
C)  31.3 m/s
D)  11.3 m/s
E)  62.2 m/s

Question 7

The site from which an airplane takes off is the origin.The x axis points east;the y axis points straight up.The position and velocity vectors of the plane at a later time are given by  r→=(1.61×106i~+9.14×103j~) m\overrightarrow { \mathbf { r } } = \left( 1.61 	imes 10 ^ { 6 } 	ilde { \mathbf { i } } + 9.14 	imes 10 ^ { 3 } 	ilde { \mathbf { j } } ight)  \mathrm { m }r=(1.61×106i~+9.14×103j~​) m  and  v→=+224i^ms\overrightarrow { \mathbf { v } } = + 224 \hat { \mathbf { i } } \frac { \mathrm { m } } { \mathrm { s } }v=+224i^sm​  . The plane is most likely

Accepted Answer

A)  just touching down.
B)  in level flight in the air.
C)  ascending.
D)  descending.
E)  taking off.

Question 8

A tennis player wants to slam a serve at O so that the ball lands just inside the opposite corner of the court.What should the ratio  v0yv0x\frac { v _ { 0 y } } { v _ { 0 x } }v0x​v0y​​  be for the initial velocity  v→0\overrightarrow { \mathbf { v } } _ { 0 }v0​  ? The time t = 0 is the time when the ball is hit by the racket.

Accepted Answer

A)  W/L
B)  L/W
C)    12gt2/L\frac { 1 } { 2 } g t ^ { 2 } / L21​gt2/L 
D)    12gt2/W\frac { 1 } { 2 } g t ^ { 2 } / W21​gt2/W 
E)    12gt2/L2+W2\frac { 1 } { 2 } g t ^ { 2 } / \sqrt { L ^ { 2 } + W ^ { 2 } }21​gt2/L2+W2c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429c69,-144,104.5,-217.7,106.5,-221l0 -0c5.3,-9.3,12,-14,20,-14H400000v40H845.2724s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47zM834 80h400000v40h-400000z'/>​ B

Question 9

With the x axis horizontal and the y axis vertically upward,the change in the horizontal component of velocity, Δ\DeltaΔ vx,and the change in the vertical component of velocity, Δ\DeltaΔ vy,of a projectile are related to the time since leaving the barrel, Δ\DeltaΔ t,as

Accepted Answer

A)   Δ\DeltaΔ vx = 0; Δ\DeltaΔ vy = 0.
B)   Δ\DeltaΔ vx = g Δ\DeltaΔ t; Δ\DeltaΔ vy = 0.
C)   Δ\DeltaΔ vx = 0; Δ\DeltaΔ vy = g Δ\DeltaΔ t.
D)   Δ\DeltaΔ vx = 0; Δ\DeltaΔ vy = -g Δ\DeltaΔ t.
E)   Δ\DeltaΔ vx = g Δ\DeltaΔ t; Δ\DeltaΔ vy = -g Δ\DeltaΔ t.

Question 10

Which of the following quantities is directly proportional to the time interval after a projectile has left the barrel that shot it out? The x axis is horizontal;the y axis is vertically upward.

Accepted Answer

A)    Δ∣v→∣\Delta | \overrightarrow { \mathbf { v } } |Δ∣v-16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z'/>∣ 
B)   Δ\DeltaΔ ay
C)   Δ\DeltaΔ y
D)    Δ∣r→∣\Delta | \overrightarrow { \mathbf { r } } |Δ∣r-16.7 32-27.7 63.7-33 95 0 1.3-.2 2.7-.5 4-.3 1.3-.5 2.3-.5 3 0 7.3 6.7 11 20 11 8 0 13.2-.8 15.5-2.5 2.3-1.7 4.2-5.5 5.5-11.5 2-13.3 5.7-27 11-41 14.7-44.7 39-84.5 73-119.5s73.7-60.2 119-75.5c6-2 9-5.7 9-11s-3-9-9-11c-45.3-15.3-85-40.5-119-75.5s-58.3-74.8-73-119.5c-4.7-14-8.3-27.3-11-40-1.3-6.7-3.2-10.8-5.5-12.5-2.3-1.7-7.5-2.5-15.5-2.5-14 0-21 3.7-21 11 0 2 2 10.3 6 25 20.7 83.3 67 151.7 139 205zm0 0v40h399900v-40z'/>∣ 
E)   Δ\DeltaΔ vy  E

Question 11

Two cooks standing side by side in a restaurant pull their beaters out of the dough at the same instant.A glob of dough flies off each beater.Each glob lands on the top of a tin the same horizontal distance away and at its initial height.However,one lands later than the other.The explanation is that they left the beaters at angles  θ	hetaθ 1 and  θ	hetaθ 2 such that:

Accepted Answer

A)   θ	hetaθ 2 = - θ	hetaθ 1.
B)   θ	hetaθ 1 +  θ	hetaθ 2 =  π4\frac { \pi } { 4 }4π​  .
C)   θ	hetaθ 1 +  θ	hetaθ 2 =  π2\frac { \pi } { 2 }2π​  .
D)   θ	hetaθ 1 +  θ	hetaθ 2 =   π\piπ .
E)   θ	hetaθ 1 - θ	hetaθ 2 =   π\piπ .

Question 12

A rock is thrown from the edge of the top of a 100-ft tall building at some unknown angle above the horizontal.The rock strikes the ground a horizontal distance of 160 ft from the base of the building 5.0 s after being thrown.Assume that the ground is level and that the side of the building is vertical.Determine the speed with which the rock was thrown.

Accepted Answer

A)  72 ft/s
B)  77 ft/s
C)  68 ft/s
D)  82 ft/s
E)  87 ft/s

Question 13

A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 î - 2.0 ĵ) m/s2.At the instant the particle moves back across the x axis (y = 0) ,what is the value of its x coordinate?

Accepted Answer

A)  65 m
B)  91 m
C)  54 m
D)  78 m
E)  86 m

Question 14

Two cars are traveling around identical circular racetracks.Car A travels at a constant speed of 20 m/s.Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s.When car B has the same (tangential) velocity as car A,it is always true that:

Accepted Answer

A)  it is passing car A.
B)  it has the same linear (tangential) acceleration as car A.
C)  it has the same centripetal acceleration as car A.
D)  it has the same total acceleration as car A.
E)  it has traveled farther than car A since starting.

Question 15

A car travels in a due northerly direction at a speed of 55 km/h.The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal.If the rain is falling vertically with respect to the earth,what is the speed of the rain with respect to the earth?

Accepted Answer

A)  48 km/h
B)  95 km/h
C)  58 km/h
D)  32 km/h
E)  80 km/h

Question 16

A space station of diameter 80 m is turning about its axis at a constant rate.If the acceleration of the outer rim of the station is 2.5 m/s2,what is the period of revolution of the space station?

Accepted Answer

A)  22 s
B)  19 s
C)  25 s
D)  28 s
E)  40 s

Question 17

The site from which an airplane takes off is the origin.The x axis points east;the y axis points straight up.The position and velocity vectors of the plane at a later time are given by  r→=(1.61×106i^) m\overrightarrow { \mathbf { r } } = \left( 1.61 	imes 10 ^ { 6 } \hat { \mathbf { i } } ight)  \mathrm { m }r=(1.61×106i^) m  and  v→=+100i^ms\overrightarrow { \mathbf { v } } = + 100 \hat { \mathbf { i } } \frac { \mathrm { m } } { \mathrm { s } }v=+100i^sm​  . The plane is most likely

Accepted Answer

A)  just touching down.
B)  in level flight in the air.
C)  ascending.
D)  descending.
E)  taking off.

Question 18

A tennis player standing 12.6 m from the net hits the ball at 3.00$\degree$ above the horizontal.To clear the net,the ball must rise at least 0.330 m.If the ball just clears the net at the apex of its trajectory,how fast was the ball moving when it left the racket?

Accepted Answer

The answer of A tennis player standing 12.6 m from...

Question 19

Given the equations below,which description best fits the physical situation?  60.4 m=(40.0ms) (2.00 s) −12(9.80ms2) (2.00 s) 260.4 \mathrm {~m} = \left( 40.0 \frac { \mathrm { m } } { \mathrm { s } } \right)  ( 2.00 \mathrm {~s} )  - \frac { 1 } { 2 } \left( 9.80 \frac { \mathrm { m } } { \mathrm { s } ^ { 2 } } \right)  ( 2.00 \mathrm {~s} )  ^ { 2 }60.4 m=(40.0sm​) (2.00 s) −21​(9.80s2m​) (2.00 s) 2

Accepted Answer

A)  A projectile's displacement two seconds after being fired upward with a speed of 30.0 m/s.
B)  A projectile's displacement two seconds after being fired upward with a speed of 40.0 m/s.
C)  A projectile's displacement two seconds after being fired upward with a speed of 50.0 m/s.
D)  A projectile's displacement two seconds after being fired upward with a speed of 60.0 m/s.
E)  A projectile's displacement two seconds after being fired upward with a speed of 80.0 m/s.  B

Question 20

A particle moves along a circular path having a radius of 2.0 m.At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s2,what is the magnitude of the total acceleration of the particle?

Accepted Answer

A)  7.5 m/s2
B)  6.0 m/s2
C)  5.4 m/s2
D)  6.7 m/s2
E)  4.5 m/s2

Exam 3: Motion in Two Dimensions

At t = 0,a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i -4.0j) m/s².At the instant the x coordinate of the particle is 15 m,what is the speed of the particle?

Correct Answer
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Correct Answer
verified

An airplane flies horizontally with a speed of 300 m/s at an altitude of 400 m.Assume that the ground is level.At what horizontal distance from a target must the pilot release a bomb so as to hit the target?

Correct Answer
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Correct Answer
verified

Correct Answer
verified

A car is driven 1 200 m north at 20.0 m/s and then driven 1 600 m east at 25.0 m/s.What is the magnitude of the average velocity for this trip?

Correct Answer
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Correct Answer
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Correct Answer
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B

With the x axis horizontal and the y axis vertically upward,the change in the horizontal component of velocity, $\Delta$ v_x,and the change in the vertical component of velocity, $\Delta$ v_y,of a projectile are related to the time since leaving the barrel, $\Delta$ t,as

Correct Answer
verified

Which of the following quantities is directly proportional to the time interval after a projectile has left the barrel that shot it out? The x axis is horizontal;the y axis is vertically upward.

Correct Answer
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E

Correct Answer
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Correct Answer
verified

A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 î - 2.0 ĵ) m/s².At the instant the particle moves back across the x axis (y = 0) ,what is the value of its x coordinate?

Correct Answer
verified

Two cars are traveling around identical circular racetracks.Car A travels at a constant speed of 20 m/s.Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s.When car B has the same (tangential) velocity as car A,it is always true that:

Correct Answer
verified

A car travels in a due northerly direction at a speed of 55 km/h.The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal.If the rain is falling vertically with respect to the earth,what is the speed of the rain with respect to the earth?

Correct Answer
verified

A space station of diameter 80 m is turning about its axis at a constant rate.If the acceleration of the outer rim of the station is 2.5 m/s²,what is the period of revolution of the space station?

Correct Answer
verified

Correct Answer
verified

A tennis player standing 12.6 m from the net hits the ball at 3.00 $\degree$ above the horizontal.To clear the net,the ball must rise at least 0.330 m.If the ball just clears the net at the apex of its trajectory,how fast was the ball moving when it left the racket?

Correct Answer
verified

Correct Answer
verified
B

A particle moves along a circular path having a radius of 2.0 m.At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s²,what is the magnitude of the total acceleration of the particle?

Correct Answer
verified

Exam 3: Motion in Two Dimensions

At t = 0,a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i -4.0j) m/s2.At the instant the x coordinate of the particle is 15 m,what is the speed of the particle?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

An airplane flies horizontally with a speed of 300 m/s at an altitude of 400 m.Assume that the ground is level.At what horizontal distance from a target must the pilot release a bomb so as to hit the target?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A car is driven 1 200 m north at 20.0 m/s and then driven 1 600 m east at 25.0 m/s.What is the magnitude of the average velocity for this trip?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct AnswerverifiedB

With the x axis horizontal and the y axis vertically upward,the change in the horizontal component of velocity, Δ\DeltaΔ vx,and the change in the vertical component of velocity, Δ\DeltaΔ vy,of a projectile are related to the time since leaving the barrel, Δ\DeltaΔ t,as

Correct AnswerverifiedShow Answer

Which of the following quantities is directly proportional to the time interval after a projectile has left the barrel that shot it out? The x axis is horizontal;the y axis is vertically upward.

Correct AnswerverifiedE

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 î - 2.0 ĵ) m/s2.At the instant the particle moves back across the x axis (y = 0) ,what is the value of its x coordinate?

Correct AnswerverifiedShow Answer

Two cars are traveling around identical circular racetracks.Car A travels at a constant speed of 20 m/s.Car B starts at rest and speeds up with constant tangential acceleration until its speed is 40 m/s.When car B has the same (tangential) velocity as car A,it is always true that:

Correct AnswerverifiedShow Answer

A car travels in a due northerly direction at a speed of 55 km/h.The traces of rain on the side windows of the car make an angle of 60 degrees with respect to the horizontal.If the rain is falling vertically with respect to the earth,what is the speed of the rain with respect to the earth?

Correct AnswerverifiedShow Answer

A space station of diameter 80 m is turning about its axis at a constant rate.If the acceleration of the outer rim of the station is 2.5 m/s2,what is the period of revolution of the space station?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

A tennis player standing 12.6 m from the net hits the ball at 3.00 °\degree° above the horizontal.To clear the net,the ball must rise at least 0.330 m.If the ball just clears the net at the apex of its trajectory,how fast was the ball moving when it left the racket?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedB

A particle moves along a circular path having a radius of 2.0 m.At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s2,what is the magnitude of the total acceleration of the particle?

Correct AnswerverifiedShow Answer

At t = 0,a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i -4.0j) m/s².At the instant the x coordinate of the particle is 15 m,what is the speed of the particle?

Correct Answer
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Correct Answer
verified

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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B

With the x axis horizontal and the y axis vertically upward,the change in the horizontal component of velocity, $\Delta$ v_x,and the change in the vertical component of velocity, $\Delta$ v_y,of a projectile are related to the time since leaving the barrel, $\Delta$ t,as

Correct Answer
verified

Correct Answer
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E

Correct Answer
verified

Correct Answer
verified

A particle leaves the origin with a velocity of 7.2 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (3.0 î - 2.0 ĵ) m/s².At the instant the particle moves back across the x axis (y = 0) ,what is the value of its x coordinate?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A space station of diameter 80 m is turning about its axis at a constant rate.If the acceleration of the outer rim of the station is 2.5 m/s²,what is the period of revolution of the space station?

Correct Answer
verified

Correct Answer
verified

A tennis player standing 12.6 m from the net hits the ball at 3.00 $\degree$ above the horizontal.To clear the net,the ball must rise at least 0.330 m.If the ball just clears the net at the apex of its trajectory,how fast was the ball moving when it left the racket?

Correct Answer
verified

Correct Answer
verified
B

A particle moves along a circular path having a radius of 2.0 m.At an instant when the speed of the particle is equal to 3.0 m/s and changing at the rate of 5.0 m/s²,what is the magnitude of the total acceleration of the particle?

Correct Answer
verified