FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 4: Newtons Second Law of Motion: Force and Acceleration

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 31

Multiple Choice

Review LaterAdd Note

Review Later

Suppose a particle is being accelerated through space by a 10-N force.Suddenly the particle encounters a second force of 10 N in the opposite direction from the first force.The particle with both forces acting on it

A) is brought to a rapid halt.
B) decelerates gradually to a halt.
C) continues at the speed it had when it encountered the second force.
D) theoretically tends to accelerate toward the speed of light.
E) none of these

Correct Answer

verified

Show Answer

Question 32

Multiple Choice

Review LaterAdd Note

Review Later

A skydiver jumps from a high-flying plane.As her velocity of fall increases,her acceleration

A) increases.
B) decreases.
C) remains unchanged regardless of air resistance.

Correct Answer

verified

Show Answer

Question 33

Multiple Choice

Review LaterAdd Note

A ride on a roller-coaster car containing 6 passengers takes 3 minutes.Neglecting friction,a similar ride with 12 passengers aboard would take

An object released from rest on another planet requires one second to fall a distance of 6 meters.What is the acceleration in meters per second per second due to gravity on this planet?

A kilogram is a measure of an object's

Which has zero acceleration? An object

A skydiver's terminal velocity will be greatest if she falls

A skydiver of mass 100 kg experiences air resistance of 500 N,and an acceleration of

If one object has twice as much mass as another object,it also has twice as much

An object is propelled along a straight-line path in space by a force.If the mass of the object somehow becomes twice as much,its acceleration

An object following a straight-line path at constant speed

Your car is coasting on level ground at 60 km/h and you apply the brakes until the car slows to 40 km/h.If you suddenly release the brakes now,the car tends to

A 10-kilogram block is pushed across a horizontal surface with a horizontal force of 20 N against a friction force of 10 N.The acceleration of the block in meters per second per second is

Compared to a 1-kg block of solid iron,a 2-kg block of solid iron has twice as much

A rock weighs 30 N on Earth.A second rock weighs 30 N on the moon.Which of the two rocks has the greater mass?

A feather and a coin will have equal accelerations when falling in a vacuum because

What horizontally-applied force will accelerate a 400-kg crate at 1 m/s2 across a factory floor against a friction force half its weight?

A ball thrown straight upward takes 10 seconds to go up and return to the ground.Because of air resistance,the time taken for the ball just to go up is

A 2000-kg car experiences a braking force of 10,000 N and skids to a stop in 6 seconds.The speed of the car just before the brakes were applied was

If more horizontal force is applied to a sliding object than is needed to maintain a constant velocity