Question 1

The impulse-momentum relationship is a direct result of

Accepted Answer

A)  Newton's 2nd law. 
B)  Newton's 4th law. 
C)  Newton's 3rd law. 
D)  Newton's 1st law. 
A)  Newton's 2nd law. 
B)  Newton's 4th law. 
C)  Newton's 3rd law. 
D)  Newton's 1st law. A

Question 2

It takes 40 J to push a large box 4 m across a floor. Assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

Accepted Answer

A)  4 N 
B)  40 N 
C)  10 N 
D)  160 N 
E)  none of these 
A)  4 N 
B)  40 N 
C)  10 N 
D)  160 N 
E)  none of these C

Question 3

The power required to exert 1 N force, over a distance of 1 m in 1 second is

Accepted Answer

A)  2 W. 
B)  3 W. 
C)  1 W. 
D)  1/3 W. 
E)  none of these. 
A)  2 W. 
B)  3 W. 
C)  1 W. 
D)  1/3 W. 
E)  none of these. C

Question 4

A 1-N apple falls to the ground. The apple hits the ground with an impact force of about

Accepted Answer

A)  2 N. 
B)  4 N. 
C)  9.8 N. 
D)  1 N. 
E)  not enough information given to say 
A)  2 N. 
B)  4 N. 
C)  9.8 N. 
D)  1 N. 
E)  not enough information given to say

Question 5

A motorcycle with a mass of 100 kilograms, slowly rolls over the edge of a cliff and falls for three seconds before it reaches the bottom of a gully. Its momentum ( in units of kilogram meters per second) just before it hit bottom and became burned rubber and scrap metal was

Accepted Answer

A)  1,000. 
B)  4,000. 
C)  3,000. 
D)  9,000. 
E)  2,000. 
A)  1,000. 
B)  4,000. 
C)  3,000. 
D)  9,000. 
E)  2,000.

Question 6

Compared to the recoiling rifle, the bullet fired has

Accepted Answer

A)  a greater momentum. 
B)  a smaller speed. 
C)  a greater kinetic energy. 
D)  all of the above 
A)  a greater momentum. 
B)  a smaller speed. 
C)  a greater kinetic energy. 
D)  all of the above

Question 7

A bullet has more kinetic energy than the recoiling rifle from which it is fired is because the force on the bullet acts over a

Accepted Answer

A)  longer time. 
B)  longer distance. 
C)  longer time and a greater distance. 
A)  longer time. 
B)  longer distance. 
C)  longer time and a greater distance.

Question 8

The ball rolling down an incline has its maximum potential energy at

Accepted Answer

A)  the bottom. 
B)  halfway down. 
C)  the top. 
D)  a quarter of the way down. 
A)  the bottom. 
B)  halfway down. 
C)  the top. 
D)  a quarter of the way down.

Question 9

The force on an apple hitting the ground depends upon

Accepted Answer

A)  whether or not the apple bounces. 
B)  the speed of the apple just before it hits. 
C)  the time of impact with the ground. 
D)  all of these 
A)  whether or not the apple bounces. 
B)  the speed of the apple just before it hits. 
C)  the time of impact with the ground. 
D)  all of these

Question 10

Both A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is

Accepted Answer

A)  half as much. 
B)  the same. 
C)  twice as much. 
D)  impossible to predict without further information 
A)  half as much. 
B)  the same. 
C)  twice as much. 
D)  impossible to predict without further information

Question 11

A ball rolling down an incline has its minimum speed

Accepted Answer

A)  near the top of the incline. 
B)  at the end the incline. 
C)  half way down the incline. 
D)  impossible to predict without knowing the ball's mass 
E)  impossible to predict without knowing the size of the ball 
A)  near the top of the incline. 
B)  at the end the incline. 
C)  half way down the incline. 
D)  impossible to predict without knowing the ball's mass 
E)  impossible to predict without knowing the size of the ball

Question 12

After rolling halfway down an incline a marble's kinetic energy is

Accepted Answer

A)  greater than its potential energy. 
B)  the same as its potential energy. 
C)  less than its potential energy. 
D)  impossible to determine. 
A)  greater than its potential energy. 
B)  the same as its potential energy. 
C)  less than its potential energy. 
D)  impossible to determine.

Question 13

A light aluminum ball and a heavy lead ball of the same size are allowed to roll down an incline. When they are halfway down the incline, they will have identical

Accepted Answer

A)  momentum. 
B)  kinetic energies. 
C)  inertias. 
D)  potential energies. 
E)  none of the above choices 
A)  momentum. 
B)  kinetic energies. 
C)  inertias. 
D)  potential energies. 
E)  none of the above choices

Question 14

A hydraulic press, like a wheel and axle, is capable of multiplying force input.

Accepted Answer

A)  sometimes false 
B)  sometimes true 
C)  always false 
D)  always true 
A)  sometimes false 
B)  sometimes true 
C)  always false 
D)  always true

Question 15

A 1-kg glider and a 2-kg glider both slide toward each other at 1 m/s on an air track. They collide and stick. The combined mass moves at

Accepted Answer

A)  1/2 m/s. 
B)  1/6 m/s. 
C)  1/3 m/s. 
D)  0 m/s. 
E)  1.5 m/s. 
A)  1/2 m/s. 
B)  1/6 m/s. 
C)  1/3 m/s. 
D)  0 m/s. 
E)  1.5 m/s.

Question 16

Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed to do this job was

Accepted Answer

A)  1000 W. 
B)  50 W. 
C)  20 W. 
D)  100 W. 
E)  20,000 W. 
A)  1000 W. 
B)  50 W. 
C)  20 W. 
D)  100 W. 
E)  20,000 W.

Question 17

Two objects have the same size and shape, but one is much heavier than the other. When they are dropped simultaneously from a tower, they reach the ground at the same time, but the heavier one has a greater

Accepted Answer

A)  momentum. 
B)  acceleration. 
C)  speed. 
D)  all of these 
E)  none of these 
A)  momentum. 
B)  acceleration. 
C)  speed. 
D)  all of these 
E)  none of these

Question 18

Which would be more damaging, driving into a very massive concrete wall with no "give," or having a head-on collision at the same speed with an identical car moving toward you with the same speed?

Accepted Answer

A)  wall 
B)  car 
C)  both the same 
D)  impossible to predict without additional information 
A)  wall 
B)  car 
C)  both the same 
D)  impossible to predict without additional information

Question 19

If a ping pong ball and a golf ball are both moving in the same direction with the same amount of kinetic energy, the speed of the ping pong ball must be

Accepted Answer

A)  more than the golf ball. 
B)  the same as the golf ball. 
C)  less than the golf ball. 
D)  impossible to predict without additional information 
A)  more than the golf ball. 
B)  the same as the golf ball. 
C)  less than the golf ball. 
D)  impossible to predict without additional information

Question 20

An open freight car rolls friction free along a horizontal track in a pouring rain that falls vertically. As water accumulates in the car, the car's speed

Accepted Answer

A)  doesn't change. 
B)  increases. 
C)  decreases. 
D)  cannot be determined with the information given 
A)  doesn't change. 
B)  increases. 
C)  decreases. 
D)  cannot be determined with the information given

The impulse-momentum relationship is a direct result of

It takes 40 J to push a large box 4 m across a floor. Assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

The power required to exert 1 N force, over a distance of 1 m in 1 second is

A 1-N apple falls to the ground. The apple hits the ground with an impact force of about

A motorcycle with a mass of 100 kilograms, slowly rolls over the edge of a cliff and falls for three seconds before it reaches the bottom of a gully. Its momentum ( in units of kilogram meters per second) just before it hit bottom and became burned rubber and scrap metal was

Compared to the recoiling rifle, the bullet fired has

A bullet has more kinetic energy than the recoiling rifle from which it is fired is because the force on the bullet acts over a

The ball rolling down an incline has its maximum potential energy at

The force on an apple hitting the ground depends upon

Both A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is

A ball rolling down an incline has its minimum speed

After rolling halfway down an incline a marble's kinetic energy is

A light aluminum ball and a heavy lead ball of the same size are allowed to roll down an incline. When they are halfway down the incline, they will have identical

A hydraulic press, like a wheel and axle, is capable of multiplying force input.

A 1-kg glider and a 2-kg glider both slide toward each other at 1 m/s on an air track. They collide and stick. The combined mass moves at

Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed to do this job was

Two objects have the same size and shape, but one is much heavier than the other. When they are dropped simultaneously from a tower, they reach the ground at the same time, but the heavier one has a greater

Which would be more damaging, driving into a very massive concrete wall with no "give," or having a head-on collision at the same speed with an identical car moving toward you with the same speed?

If a ping pong ball and a golf ball are both moving in the same direction with the same amount of kinetic energy, the speed of the ping pong ball must be

An open freight car rolls friction free along a horizontal track in a pouring rain that falls vertically. As water accumulates in the car, the car's speed

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Light Waves

Properties of Light

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Exam 5: Momentum and Energy

The impulse-momentum relationship is a direct result of

It takes 40 J to push a large box 4 m across a floor. Assuming the push is in the same direction as the move, what is the magnitude of the force on the box?

The power required to exert 1 N force, over a distance of 1 m in 1 second is

A 1-N apple falls to the ground. The apple hits the ground with an impact force of about

A motorcycle with a mass of 100 kilograms, slowly rolls over the edge of a cliff and falls for three seconds before it reaches the bottom of a gully. Its momentum ( in units of kilogram meters per second) just before it hit bottom and became burned rubber and scrap metal was

Compared to the recoiling rifle, the bullet fired has

A bullet has more kinetic energy than the recoiling rifle from which it is fired is because the force on the bullet acts over a

The ball rolling down an incline has its maximum potential energy at

The force on an apple hitting the ground depends upon

Both A 50-kg sack is lifted 2 meters from the ground and a 25-kg sack is lifted 4 meters in the same time. The power expended in raising the 50-kg sack is

A ball rolling down an incline has its minimum speed

After rolling halfway down an incline a marble's kinetic energy is

A light aluminum ball and a heavy lead ball of the same size are allowed to roll down an incline. When they are halfway down the incline, they will have identical

A hydraulic press, like a wheel and axle, is capable of multiplying force input.

A 1-kg glider and a 2-kg glider both slide toward each other at 1 m/s on an air track. They collide and stick. The combined mass moves at

Using 1000 J of work, a toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed to do this job was

Two objects have the same size and shape, but one is much heavier than the other. When they are dropped simultaneously from a tower, they reach the ground at the same time, but the heavier one has a greater

Which would be more damaging, driving into a very massive concrete wall with no "give," or having a head-on collision at the same speed with an identical car moving toward you with the same speed?

If a ping pong ball and a golf ball are both moving in the same direction with the same amount of kinetic energy, the speed of the ping pong ball must be

An open freight car rolls friction free along a horizontal track in a pouring rain that falls vertically. As water accumulates in the car, the car's speed

About Science

Atoms

Equilibrium and Linear Motion

Newtons Laws of Motion

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

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