Question 1

An object maintains a constant acceleration unless there is a change in

Accepted Answer

A)  the applied force. 
B)  the air resistance. 
C)  its mass. 
D)  any of the above 
A)  the applied force. 
B)  the air resistance. 
C)  its mass. 
D)  any of the above

Question 2

Hang from a pair of gym rings and the upward support forces of the rings will always

Accepted Answer

A)  each be equal to your weight. 
B)  each be half your weight. 
C)  add up to equal your weight. 
A)  each be equal to your weight. 
B)  each be half your weight. 
C)  add up to equal your weight.

Question 3

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

Accepted Answer

A)  their velocities are the same. 
B)  the ratio of each object's weight to its mass is the same. 
C)  the force of gravity does not act in a vacuum. 
D)  the force of gravity is the same for each in a vacuum. 
E)  none of these. 
A)  their velocities are the same. 
B)  the ratio of each object's weight to its mass is the same. 
C)  the force of gravity does not act in a vacuum. 
D)  the force of gravity is the same for each in a vacuum. 
E)  none of these.

Question 4

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

Accepted Answer

A)  acceleration due to gravity. 
B)  inertia. 
C)  velocity. 
D)  volume. 
E)  all of these 
A)  acceleration due to gravity. 
B)  inertia. 
C)  velocity. 
D)  volume. 
E)  all of these

Question 5

A car has a mass of 1000 kg and accelerates at 2 meters per second per second. What is the magnitude of the net force exerted on the car?

Accepted Answer

A)  2000 N 
B)  1500 N 
C)  1000 N 
D)  500 N 
E)  none of these 
A)  2000 N 
B)  1500 N 
C)  1000 N 
D)  500 N 
E)  none of these

Question 6

A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. The reaction to this force is the

Accepted Answer

A)  muscular effort in the player's arms. 
B)  player's grip on the glove. 
C)  force the glove exerts on the ball. 
D)  friction of the ground against the player's shoes. 
E)  none of these 
A)  muscular effort in the player's arms. 
B)  player's grip on the glove. 
C)  force the glove exerts on the ball. 
D)  friction of the ground against the player's shoes. 
E)  none of these

Question 7

A skydiver steps from a helicopter and falls for a few seconds until he reaches his terminal velocity. Thereafter, until he opens his parachute, his acceleration

Accepted Answer

A)  is zero. 
B)  is constant. 
C)  increases. 
D)  decreases. 
E)  none of these 
A)  is zero. 
B)  is constant. 
C)  increases. 
D)  decreases. 
E)  none of these

Question 8

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

Accepted Answer

A)  about 0.3 g. 
B)  about 0.4 g. 
C)  about 0.5 g. 
D)  about 0.2 g. 
E)  more than 0.5 g. 
A)  about 0.3 g. 
B)  about 0.4 g. 
C)  about 0.5 g. 
D)  about 0.2 g. 
E)  more than 0.5 g.

Question 9

Arnold Strongman and Suzie Small each pull very hard on opposite ends of a massless rope in a tug-of-war. The greater force on the rope is exerted by

Accepted Answer

A)  Arnold, of course. 
B)  Suzie, surprisingly. 
C)  both the same, interestingly enough. 
A)  Arnold, of course. 
B)  Suzie, surprisingly. 
C)  both the same, interestingly enough.

Question 10

Two objects of the same size, but unequal weights are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the

Accepted Answer

A)  lighter object. 
B)  heavier object. 
C)  Both hit at the same time. 
D)  not enough information 
A)  lighter object. 
B)  heavier object. 
C)  Both hit at the same time. 
D)  not enough information

Question 11

A 10-N block and a 1-N block lie on a horizontal frictionless table. To provide them with equal horizontal acceleration, we would have to push with

Accepted Answer

A)  10 squared or 100 times as much force on the heavier block. 
B)  10 times as much force on the heavier block. 
C)  1/10 as much force on the heavier block. 
D)  equal forces on each block. 
E)  none of these 
A)  10 squared or 100 times as much force on the heavier block. 
B)  10 times as much force on the heavier block. 
C)  1/10 as much force on the heavier block. 
D)  equal forces on each block. 
E)  none of these

Question 12

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same

Accepted Answer

A)  volume. 
B)  mass. 
C)  weight. 
D)  all of these 
E)  none of these 
A)  volume. 
B)  mass. 
C)  weight. 
D)  all of these 
E)  none of these

Question 13

Whenever the net force on an object is zero, its acceleration

Accepted Answer

A)  is zero. 
B)  may be less than zero. 
C)  may be more than zero 
A)  is zero. 
B)  may be less than zero. 
C)  may be more than zero

Question 14

If you are driving at 20 m/s and slam on your brakes and skid at 0.5 g to a full stop, the skidding time in seconds is

Accepted Answer

A)  about 5. 
B)  about 3. 
C)  about 4. 
D)  about 6. 
E)  more than 6. 
A)  about 5. 
B)  about 3. 
C)  about 4. 
D)  about 6. 
E)  more than 6.

Question 15

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

Accepted Answer

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

Question 16

A 10-N falling object encounters 10 N of air resistance. The net force on the object is

Accepted Answer

A)  10 N. 
B)  4 N. 
C)  0 N. 
D)  6 N. 
E)  none of these 
A)  10 N. 
B)  4 N. 
C)  0 N. 
D)  6 N. 
E)  none of these

Question 17

A heavy block at rest is suspended by a vertical rope. When the block is accelerated upward by the rope, the rope tension

Accepted Answer

A)  decreases. 
B)  remains the same. 
C)  increases. 
A)  decreases. 
B)  remains the same. 
C)  increases.

Question 18

Your friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch. The tissue paper is held in midair - no wall, no tricks. You

Accepted Answer

A)  have reservations about this assertion. 
B)  disagree, for a good punch easily delivers this much force. 
C)  agree that it can't be done. 
A)  have reservations about this assertion. 
B)  disagree, for a good punch easily delivers this much force. 
C)  agree that it can't be done.

Question 19

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?

Accepted Answer

A)  3 
B)  12 
C)  6 
D)  15 
E)  none of these 
A)  3 
B)  12 
C)  6 
D)  15 
E)  none of these

Question 20

A horse exerts 500 N of force on a heavy wagon. The wagon pulls back on the horse with an equal force. The wagon still accelerates because

Accepted Answer

A)  these forces are not an action-reaction pair. 
B)  the wagon does not accelerate because these forces are equal and opposite. 
C)  the horse pulls on the wagon a brief time before the wagon reacts. 
D)  nevertheless there is still an unbalanced force on the wagon. 
E)  the wagon is not alive. 
A)  these forces are not an action-reaction pair. 
B)  the wagon does not accelerate because these forces are equal and opposite. 
C)  the horse pulls on the wagon a brief time before the wagon reacts. 
D)  nevertheless there is still an unbalanced force on the wagon. 
E)  the wagon is not alive.

An object maintains a constant acceleration unless there is a change in

Hang from a pair of gym rings and the upward support forces of the rings will always

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

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

A car has a mass of 1000 kg and accelerates at 2 meters per second per second. What is the magnitude of the net force exerted on the car?

A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. The reaction to this force is the

A skydiver steps from a helicopter and falls for a few seconds until he reaches his terminal velocity. Thereafter, until he opens his parachute, his acceleration

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

Arnold Strongman and Suzie Small each pull very hard on opposite ends of a massless rope in a tug-of-war. The greater force on the rope is exerted by

Two objects of the same size, but unequal weights are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the

A 10-N block and a 1-N block lie on a horizontal frictionless table. To provide them with equal horizontal acceleration, we would have to push with

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same

Whenever the net force on an object is zero, its acceleration

If you are driving at 20 m/s and slam on your brakes and skid at 0.5 g to a full stop, the skidding time in seconds is

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

A 10-N falling object encounters 10 N of air resistance. The net force on the object is

A heavy block at rest is suspended by a vertical rope. When the block is accelerated upward by the rope, the rope tension

Your friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch. The tissue paper is held in midair - no wall, no tricks. You

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 horse exerts 500 N of force on a heavy wagon. The wagon pulls back on the horse with an equal force. The wagon still accelerates because

About Science

Atoms

Equilibrium and Linear Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

Quantum Theory

The Atomic Nucleus and Radioactivity

Physics of Rotation and Equilibrium

Filters

Exam 4: Newtons Laws of Motion

An object maintains a constant acceleration unless there is a change in

Hang from a pair of gym rings and the upward support forces of the rings will always

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

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

A car has a mass of 1000 kg and accelerates at 2 meters per second per second. What is the magnitude of the net force exerted on the car?

A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. The reaction to this force is the

A skydiver steps from a helicopter and falls for a few seconds until he reaches his terminal velocity. Thereafter, until he opens his parachute, his acceleration

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

Arnold Strongman and Suzie Small each pull very hard on opposite ends of a massless rope in a tug-of-war. The greater force on the rope is exerted by

Two objects of the same size, but unequal weights are dropped from a tall tower. Taking air resistance into consideration, the object to hit the ground first will be the

A 10-N block and a 1-N block lie on a horizontal frictionless table. To provide them with equal horizontal acceleration, we would have to push with

Compared to a 1-kg block of solid iron, a 2-kg block of solid iron has the same

Whenever the net force on an object is zero, its acceleration

If you are driving at 20 m/s and slam on your brakes and skid at 0.5 g to a full stop, the skidding time in seconds is

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

A 10-N falling object encounters 10 N of air resistance. The net force on the object is

A heavy block at rest is suspended by a vertical rope. When the block is accelerated upward by the rope, the rope tension

Your friend says that the heavyweight champion of the world cannot exert a force of 50 N on a piece of tissue paper with his best punch. The tissue paper is held in midair - no wall, no tricks. You

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 horse exerts 500 N of force on a heavy wagon. The wagon pulls back on the horse with an equal force. The wagon still accelerates because

About Science

Atoms

Equilibrium and Linear Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Temperature, Heat, and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light Waves

Properties of Light

Quantum Theory

The Atomic Nucleus and Radioactivity

Physics of Rotation and Equilibrium

Filters