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Fall Review 2
Test Description: Conceptual Physics Fall Review 2
Instructions: Answer all questions to get your test result.
1) An arrow in a bow has 70 J of potential energy. Assuming no loss of energy to heat, how much kinetic energy will it have after it has been shot?
A
35 J
B
140 J
C
0 J
D
70 J
2) A job is done slowly, and an identical job is done quickly. Both jobs require the same amount of work, but different amounts of ________.
A
energy
B
neither
C
both
D
power
3) A hammer strikes a nail with a 10 N force for 0.01 seconds. Calculate the impulse of the hammer.
A
0.01 kg m/s
B
10 kg m/s
C
0.10 kg m/s
D
1.0 kg m/s
4) The following footwear is best in the laboratory:
A
close-toed shoes
B
sandals
C
shoes appropriate for the weather
D
open-toed shoes
5) Horseplay or practical jokes in the laboratory are
A
okay if you are working alone.
B
always against the rules.
C
okay.
D
not dangerous.
6) The following activity is permitted in the laboratory:
A
none of these
B
drinking
C
eating
D
chewing gum
7) Which of the following has the least momentum?
A
100 kg mass moving at 3 m/s
B
1 kg mass moving at 35 m/s
C
2000 kg mass moving at 0.1 m/s
D
.01 kg mass moving at 200 m/s
8) The recoil momentum of a cannon that kicks is _____ the momentum of the cannonball it fires.
A
the same as
B
less than
C
more than
D
If you choose this answer, you will get the problem wrong.
9) Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the opposite direction to that of the first object.
A
always false
B
Forces aren't real.
C
always true
D
sometimes true
10) A high school student hits a nail with a hammer. During the collision, there is a force___________.
A
It is illegal for students to use hammers, so this is a ridiculous question.
B
on the nail but not on the hammer.
C
on the nail and also on the hammer
D
on the hammer but not on the nail.
*select an answer for all questions
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