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Physics: Chapter 9
Test Description: Part 1
Instructions: Answer all questions to get your test result.
1) Energy of motion.
A
Kinetic energy
B
Potential energy
2) Which of the following is NOT an example of potential energy?
A
a book sitting on a shelf
B
a moving car
C
a mousetrap that has been set
D
a stretched rubber band
3) If velocity is doubled, kinetic energy would be doubled.
A
False
B
True
4) An arrow in a bow has 70 J of potential energy. Assuming no loss of energy to heat/friction, how much kinetic energy will it have after it has been shot?
A
35 J
B
10 J
C
70 J
D
no way to tell
5) How would the potential energy (with reference to the ground) of a ball sitting on a shelf change if you moved it to a higher shelf?
A
potential energy would increase
B
potential energy would not change
C
potential energy would decrease
6) How much power is required to do 40 J of work on an object in 5 seconds?
A
80 W
B
8 W
C
200 W
D
40 W
7) Which has greater kinetic energy, a car traveling at 30 m/s or a half-as-massive car traveling at 60 m/s?
A
60 m/s car
B
30 m/s car
C
Both have the same kinetic energy.
8) If you run up the stairs faster your power output will decrease.
A
False
B
True
9) What is the ultimate source of energy for the food we eat?
A
Fertilizer
B
Water
C
Sunlight
10) Kinetic and potential are both forms of mechanical energy.
A
True
B
False
*select an answer for all questions
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