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- 1. Multiple Choice
Potential energy depends on the ________ and ________ of the object.
Height (position)
Mass
Speed
Friction
- 2. Multiple Choice
Which point has the most potential energy?
G
F
B
A
- 3. Multiple ChoiceWhat is energy?rate of workMotion of an objectability to do workforce over time
- 4. Multiple Choice
Kinetic energy depends on the ________ and ________ of the object.
Height (position)
Mass
Speed
Friction
- 5. Multiple Choice
A cheetah can run briefly with a speed of 31 m/s. Suppose a cheetah with a mass of 47 kg runs at this speed. What is the cheetah’s kinetic energy?
1457 J
728.5 J
45,167 J
22,583.5 J
- 6. Multiple Choice
Where does the pendulum have the greatest kinetic energy?
A
B
C
D
E
- 7. Multiple ChoiceWhich of the following objects has the most kinetic energy?A 20 kg toddler running at 5 m/sA 50 kg toddler running at 30 m/sA 90 kg toddler running at 30 m/sA 100 kg toddler running at 2 m/s
- 8. Multiple Choice
Which of the is the equation for calculating work?
W = Fd
W = ma
W = mv
W = mc2
- 9. Multiple Choice
The sum of the kinetic and potential energy in a system is known as the system's _____________________ energy.
mechanical
chemical
thermal
combined
- 10. Multiple Choice
At which point in the picture must the cart have the most MECHANICAL energy?
Point 1
Point 2
Point 3
They would all be the same
- 11. Multiple Choice
How much power is used when 9000 J of work are done in 0.5 seconds?
4,500 W
18000 W
9453 W
917.4 W
- 12. Multiple Choice
This weight lifter raised 105 kg to a height of approximately 2.31 m in 9 seconds. How much power did he developed?
264 Watts
1029 Watts
2,377 Watts
4,009 Watts
- 13. Multiple Choice
Two movers applied a total force of 350 N to push chest up a ramp into a truck. If the work that they did 1,400 J, calculate the height of the ramp?
4 m
3 m
2 m
1 m
- 14. Multiple Choice
Two people are lifting the same weight as shown in the animation. If they both do 10 reps, who will supply the most power?
Bro A
Bro B
They both will do the same work
Can't tell without knowing the weight they are lifting
- 15. Multiple Choice
After a roller coaster cart reaches ground level and starts heading back up, what happens to its potential energy?
IncreasesDecreasesStays the sameNothing - Answer choicesTagsAnswer choicesTags