1. If you push for an hour against a stationary wall, you do no work A) on the wall.
B) at all.
C) both of these
D) none of these

1. If you push an object twice as far while applying the same force you do E) twice as much work.
F) four times as much work.
G) the same amount of work.

2. If you push an object just as far while applying twice the force you do H) twice as much work.
I) four times as much work.
J) the same amount of work.

3. If you push an object with twice the work input for twice the time, your power input is K) twice.
L) four times as much.
M) the same amount as for half the work in half the time.

4. A job is done slowly, while an identical job is done quickly. Both jobs require the same amount of work, but different amounts of N) energy. B) power. C) both of these. D) none of these.

5. If you do work on an object in half the usual time, your power output is O) half the usual power output.
P) the usual power output.
Q) twice the usual power output.

6. Exert 1 N for a distance of 1 m in 1 s and you deliver a power of R) 1 W.
S) 2 W.
T) 1/3 W.
U) 3 W.
V) none of these.

7. Do 100 J of work in 50 s and your power output is
W) 1/4 W.
X) 1/2 W.
Y) 2 W.
Z) 4 W.
[) more than 4 W.

8. When an object is raised above the ground it gains a certain amount of potential energy. If the same object is raised twice as high it gains \) four times as much potential energy.

]) twice as much potential energy.
^) neither of these.

9. When an object is lifted 10 meters, it gains a certain amount of potential energy. If the same object is lifted 20 meters, its potential energy gain is _) less.
`) the...

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