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- 1. Multiple Choice
What are two things required for work to be done?
Force
Distance
Constant Speed
Momentum
- 2. Fill in the Blank
The units of work are
- 3. Fill in the Blank
If you exert a 10 N force to lift a box 5 m, how many Joules of work do you do?
(Number only)
- 4. Multiple Choice
Check all of the things that can affect power
Work
Time
Velocity
Force
Distance
- 5. Multiple Choice
How do you increase power?
Decrease Force
Increase Work
Increase Velocity
Decrease Time
- 6. Fill in the Blank
If you exert 500 N to climb 5 m up a flight of steps in 10 seconds, how many watts of power did you exert?
(number only)
- 7. Fill in the Blank
Explain conservation of energy: Energy is neither ____ nor ___ only ___
answer like (word; word; word)
- 8. Fill in the Blank
How many Joules of potential energy does a 10 kg bag of potatoes have sitting on a table 2 meters above the ground?
(answer number only)
- 9. Multiple Choice
A dropped ball does not rebound to the same height as it was dropped. Where does the energy go?
Heat
Sound
The environment
It is destroyed by hitting the ground
- 10. Multiple Choice
Two balls, a bowling ball and a baseball, are both traveling with a velocity of 10 m/s. Which ball has the greater kinetic energy?
The bowling ball
The baseball
They have the same
Neither has kinetic energy
- 11. Multiple Choice
Which is more important in baseball?
a heavier bat
a faster swing
they are of equal importance
neither matters
- 12. Multiple Choice
In the equation W = Fd, force and distance are _ related
directly
inversely
not
- 13. Multiple Choice
T/F: Work and mechanical energy are related
True
False
- 14. Fill in the Blank
40 Joules or work has been done over a distance of 5 meters. How many Newtons of force were applied?
(number only)
- 15. Fill in the Blank
100 Watts of power are put off from an engine to pump water a distance of 5 meters with a force of 100 N. How many seconds does it take the engine to pump the water?
(number only)
- 16. Fill in the Blank
A ball is thrown upward. What velocity (m/s) does the ball have when it reaches its maximum Potential Energy?
(number only)
- 17. Multiple Choice
A water balloon is launched off a building. Where in its trajectory does it have the most kinetic energy?
As soon as it is released
At the peak of its trajectory
Just before it hits the ground
Once it comes to rest on the ground
- 18. Multiple Choice
A ball thrown into the air has a maximum height of 10 meters. Where in its rise to power will the balls kinetic energy and potential energy be equal?
0 m
5 m
10 m
They are never equal
- 19. Multiple Choice
In which of the following is NO work done
Lifting a 5N book straight up
Dropping a 5N book
Allowing a 5N book to rest on the table
- 20. Multiple Choice
The energy put into a system/object is equal to:
The mechanical energy of the object
The work done on the system/object
The energy output of the system
All of the above
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