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- 1. Multiple Choice
Energy and work are measured in
kilograms
meters
Joules
m/s
- 2. Multiple ChoiceAt which point is potential energy greatest?WXYZ
- 3. Multiple ChoiceWhen a pendulum swings, at which point is kinetic energy highest?1234
- 4. Multiple ChoiceWhen a pendulum swings, at which point is potential energy at its greatest?1234
- 5. Multiple ChoiceWhich point has the most potential energy?Gfba
- 6. Multiple ChoiceWhere would a person have to be located to have the minimum gravitational potential energy?up on the roofdown in the basementin the middleoutside
- 7. Multiple ChoiceA 0.40 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy ?3.2 J4.2 J2.0 J12.8 J
- 8. Multiple Choice
2. The diagram represents a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?
1234 - 9. Multiple Choice
What is the total energy for the position of the ball indicated by the blue circle?
0 J
50 J
100 J
- 10. Multiple Choice
How much kinetic energy would the ball have at the position indicated by the blue circle?
0 J
50 J
100 J
- 11. Multiple Choice
What is the total energy that the ball would have when it is in the position indicated by the blue circle?
0 J
50 J
100 J
- 12. Multiple Choice
A 60.0 kg person walks from the ground to the roof of a 74.8 m tall building. How much gravitational potential energy does she have at the top of the building (gravity - 10m/s^2)
44880 J
63982.3 J43962.4 KJ
83942.4 J - 13. Multiple ChoiceA pitcher throws a 0.145 kg baseball at a velocity of 30.0m/s. How much kinetic energy does the ball have?65.35 J87.25 J23.45 J65.25 J
- 14. Multiple ChoiceHow can I gain potential energy? (choose the best answer)Run a mileWalk up the stairsClimb a mountainGo down the stairs
- 15. Multiple Choice
This graph depicts what type of relationship between kinetic and potential energy?
Non-Linear
Linear
Inverse
Direct
- 16. Multiple Choice
According to this graph, as kinetic energy decreases, potential energy must?
Increase
Decrease
Stay the same
- 17. Multiple Choice
Based on the diagram of a roller coaster car on a roller coaster track, what statement is true?
The car at point A has more kinetic energy than the car at point C
The car at point C has less kinetic energy than the car at point B.
The car at point C has more kinetic energy than the car at point B.
The car at point D has less potential energy than the car at point B.
- 18. Multiple Choice
How can we increase the gravitational potential energy of the car?
Strap a boulder to the car so that it weighs more.
Keep the length of the hill at 50 m but only 5 m tall.
Take the interior out of the car so that the car has less mass.
Keep the hill at 10 m tall but increase the length of the hill so that the car has farther to roll.
- 19. Multiple Choice
Select all of the objects that have kinetic energy. (You may click more than one object!)
- 20. Multiple Choice
An explosion of gas from a Hawaiian volcano blows a rock into the sky. The rock has 2000J of kinetic energy. What was its mass if the rock had a velocity of 20m/s? ( KE = 1/2mv2 )
200Kg
20,000Kg
10Kg
200Kg
- 21. Multiple Choice
A golf ball has a mass of 0.046 kg. It is dropped and has 1.1 J of gravitational potential energy (gravity = 9.8 m/s2). What height was it dropped from?
2.4 meters
234 meters
0.41 meters
There isn't enough information to determine the height.
- 22. Multiple ChoiceWhat are the two factors that affect kinetic energy?
time and energy
power and mass
mass and velocity
time and velocity
- 23. Multiple ChoiceAn 8kg dog chases a cat. if the dog has 400J of kinetic energy. What is the speed of the dog?10 m/s5 m/s1 m/s100 m/s
- 24. Multiple ChoiceWood, batteries, gasoline, and food are all examples of ________________________.gravitational potential energyelastic potential energychemical potential energyNone of the above
- 25. Multiple ChoiceGravitational potential energy depends on the ________ and ________ of the object.Height and massFriction and movementMass and MovementHeight and Friction
- 26. Multiple Choice
If these are all moving at the same speed, the vehicle with the greatest KE would be
- 27. Multiple Choice
What is the unit of measurement for Force?
Newton
Watt
Joule
Metres
- 28. Multiple Choice
What is the formula for work?
Force = work × distance
Distance = force × work
Work = force × distance
Work = force × mass
- 29. Multiple Choice
If 40N of force is applied to Rollo Koster's 10 kg cart over a distance of 50 meters, how much work is done?
8000 J
8000 N
4000 J
2000 J
- 30. Multiple ChoiceThe amount of work done in a certain amount of time is known asworkeffort forceresistance forcepower
- 31. Multiple ChoiceWork is done when a weightlifter holds a barbell still above his head.TrueFalse
- 32. Multiple Choice
If you increase your work and decrease your time, you will have
more power
less power
same amount of power
power rating can not be determined
- 33. Multiple Choice
Power always increases if work increases.
True
False
- 34. Multiple ChoiceHow much time is needed to produce 720 Joules of work if 90 watts of power is used?0.125 s8 s64800 s80 s
- 35. Multiple ChoiceIf 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?272 m17 m4.05 m272 cm
- 36. Multiple ChoiceHow much time is needed to produce 720 Joules of work if 90 watts of power is used?
0.125 s
8 s
64800 s
80 s
- 37. Multiple Choice
A 100 N force is applied to move an object a horizontal distance of 5 meters at constant speed in 10 seconds. How much power is done?
50J
50W
500J
500W
- Answer choicesTagsAnswer choicesTags