Question 1

Kinetic energy is conserved in

Accepted Answer

A) an inelastic collision. 
B) an elastic collision. 
C) any collision where two objects rebound off each other. 
D) none of the above. 
A) an inelastic collision. 
B) an elastic collision. 
C) any collision where two objects rebound off each other. 
D) none of the above. B

Question 2

The energy in the water at the top of a waterfall is an example of gravitational potential energy.

Accepted Answer

A) True 
 B)False  True

Question 3

​Match each item with the correct statement below.​
-the force that acts times the distance moved in the direction of the force

Accepted Answer

A) ​angular momentum 
B) ​elastic collision 
C) ​elastic potential energy 
D) ​energy 
E) ​gravitational potential energy
F)​heat
G)​inelastic collision
H)​kinetic energy
I)​lever
J)​linear momentum
K)​power
L)​work
M)​internal energy 
A) ​angular momentum 
B) ​elastic collision 
C) ​elastic potential energy 
D) ​energy 
E) ​gravitational potential energy
F)​heat
G)​inelastic collision
H)​kinetic energy
I)​lever
J)​linear momentum
K)​power
L)​work
M)​internal energy L

Question 4

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.
-You drop the box.As it falls to its original level,its kinetic energy is 100 J.

Accepted Answer

A) True 
 B)False

Question 5

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.
-When the box hits the floor its kinetic energy is converted into internal energy.

Accepted Answer

A) True 
 B)False

Question 6

A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s,and they stick together.After the collision,the velocity of the combined bodies is

Accepted Answer

A) 0. 
B) 0.8 m/s towards the right. 
C) 0.8 m/s towards the left. 
D) 2.4 m/s towards the right. 
E) 2.4 m/s towards the left. 
A) 0. 
B) 0.8 m/s towards the right. 
C) 0.8 m/s towards the left. 
D) 2.4 m/s towards the right. 
E) 2.4 m/s towards the left.

Question 7

For a body oscillating at the end of a spring,the energy is only elastic potential energy.

Accepted Answer

A) True 
 B)False

Question 8

If the velocity of an aircraft is doubled,the kinetic energy of the aircraft is also doubled.

Accepted Answer

A) True 
 B)False

Question 9

​Match each item with the correct statement below.​
-type of collision in which kinetic energy is not conserved

Accepted Answer

A) ​angular momentum 
B) ​elastic collision 
C) ​elastic potential energy 
D) ​energy 
E) ​gravitational potential energy
F)​heat
G)​inelastic collision
H)​kinetic energy
I)​lever
J)​linear momentum
K)​power
L)​work
M)​internal energy 
A) ​angular momentum 
B) ​elastic collision 
C) ​elastic potential energy 
D) ​energy 
E) ​gravitational potential energy
F)​heat
G)​inelastic collision
H)​kinetic energy
I)​lever
J)​linear momentum
K)​power
L)​work
M)​internal energy

Question 10

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,the person's power output is

Accepted Answer

A) 0. 
B) 3 W. 
C) 30 W. 
D) 1,200 W. 
E) 12,000 W. 
A) 0. 
B) 3 W. 
C) 30 W. 
D) 1,200 W. 
E) 12,000 W.

Question 11

The energy stored in a pile driver is an example of gravitational potential energy.

Accepted Answer

A) True 
 B)False

Question 12

The total kinetic plus potential energy of a body

Accepted Answer

A) can be negative. 
B) always stays constant if the body is freely falling. 
C) always stays constant if friction is acting. 
D) can remain constant even if the body's speed is decreasing. 
A) can be negative. 
B) always stays constant if the body is freely falling. 
C) always stays constant if friction is acting. 
D) can remain constant even if the body's speed is decreasing.

Question 13

The measure of a body's resistance to being rotated is its angular momentum.

Accepted Answer

A) True 
 B)False

Question 14

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,what is the person's power output?

Accepted Answer

The answer of A person runs up a long flight...

Question 15

The energy of a ball rolling up an inclined plane is an example of both kinetic and gravitational potential energy.

Accepted Answer

A) True 
 B)False

Question 16

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m.
-The increase of potential energy of the box is __________.

Accepted Answer

The answer of Consider a situation where you carry a...

Question 17

A light aircraft that weighs 1,600 N is accelerated at 8 m/s/s for 15 seconds.The work done on the aircraft is _________.

Accepted Answer

The answer of A light aircraft that weighs 1,600 N...

Question 18

When we say work is done by a force,we mean the force does

Accepted Answer

A) all the work. 
B) positive work. 
C) negative work. 
D) zero work. 
A) all the work. 
B) positive work. 
C) negative work. 
D) zero work.

Question 19

For a body oscillating at the end of a spring,the energy is

Accepted Answer

A) kinetic energy. 
B) elastic potential energy. 
C) gravitational potential energy. 
D) all of the above. 
E) none of the above. 
A) kinetic energy. 
B) elastic potential energy. 
C) gravitational potential energy. 
D) all of the above. 
E) none of the above.

Question 20

Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t.
-The power you supply to the crate is Fd/t.

Accepted Answer

A) True 
 B)False

Kinetic energy is conserved in

The energy in the water at the top of a waterfall is an example of gravitational potential energy.

Match each item with the correct statement below. -the force that acts times the distance moved in the direction of the force

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -You drop the box.As it falls to its original level,its kinetic energy is 100 J.

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -When the box hits the floor its kinetic energy is converted into internal energy.

A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s,and they stick together.After the collision,the velocity of the combined bodies is

For a body oscillating at the end of a spring,the energy is only elastic potential energy.

If the velocity of an aircraft is doubled,the kinetic energy of the aircraft is also doubled.

Match each item with the correct statement below. -type of collision in which kinetic energy is not conserved

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,the person's power output is

The energy stored in a pile driver is an example of gravitational potential energy.

The total kinetic plus potential energy of a body

The measure of a body's resistance to being rotated is its angular momentum.

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,what is the person's power output?

The energy of a ball rolling up an inclined plane is an example of both kinetic and gravitational potential energy.

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -The increase of potential energy of the box is __________.

A light aircraft that weighs 1,600 N is accelerated at 8 m/s/s for 15 seconds.The work done on the aircraft is _________.

When we say work is done by a force,we mean the force does

For a body oscillating at the end of a spring,the energy is

Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. -The power you supply to the crate is Fd/t.

The Study of Motion

Newtons Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

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Exam 3: Energy and Conservation Laws

Kinetic energy is conserved in

The energy in the water at the top of a waterfall is an example of gravitational potential energy.

​Match each item with the correct statement below.​ -the force that acts times the distance moved in the direction of the force

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -You drop the box.As it falls to its original level,its kinetic energy is 100 J.

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -When the box hits the floor its kinetic energy is converted into internal energy.

A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s,and they stick together.After the collision,the velocity of the combined bodies is

For a body oscillating at the end of a spring,the energy is only elastic potential energy.

If the velocity of an aircraft is doubled,the kinetic energy of the aircraft is also doubled.

​Match each item with the correct statement below.​ -type of collision in which kinetic energy is not conserved

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,the person's power output is

The energy stored in a pile driver is an example of gravitational potential energy.

The total kinetic plus potential energy of a body

The measure of a body's resistance to being rotated is its angular momentum.

A person runs up a long flight of stairs in 10 seconds.If the person's weight is 600 N and the vertical height of the stairs is 20 meters,what is the person's power output?

The energy of a ball rolling up an inclined plane is an example of both kinetic and gravitational potential energy.

Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. -The increase of potential energy of the box is __________.

A light aircraft that weighs 1,600 N is accelerated at 8 m/s/s for 15 seconds.The work done on the aircraft is _________.

When we say work is done by a force,we mean the force does

For a body oscillating at the end of a spring,the energy is

Consider a situation where you exert a force F on a crate of mass m, moving it at a speed v a distance d across a floor in a time interval t. -The power you supply to the crate is Fd/t.

The Study of Motion

Newtons Laws

Physics of Matter

Temperature and Heat

Waves and Sound

Electricity

Electromagnetism and Em Waves

Optics

Atomic Physics

Nuclear Physics

Special Relativity and Elementary Particles

Filters

Match each item with the correct statement below. -the force that acts times the distance moved in the direction of the force

Match each item with the correct statement below. -type of collision in which kinetic energy is not conserved