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SAT® Subject Test in Physics

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Work and Power

SATPHY-QXEDKR

Three objects, 1, 2, and 3, are lifted at constant velocity from the same floor to heights listed in the table below. The weights of the objects are also in the table, along with the time that was required to lift the objects.

On which object was the most work done by the lifting force, and which object was lifted with the greatest power?

Object Weight Height Time
1 5.0 N 2.0 m 2.0 s
2 10.0 N 3.0 m 10.0 s
3 7.0 N 5.0 m 35.0 s
A
Most Work Greatest Power
3 3
B
Most Work Greatest Power
1 3
C
Most Work Greatest Power
2 3
D
Most Work Greatest Power
3 2
E
Most Work Greatest Power
3 1