Jill does twice as much work as jack does and in half the time. jills power output is

Jill does twice as much work as Jack does and in half the time. Jill’s power output is Group of answer choices one-fourth as much as Jack’s power output. four times Jack’s power output. twice Jack’s power output. one-half as much as Jack’s power output. the same as Jack’s power output.

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Second Choice.

Explanation:

John’s Power = W / t

Jill Power = 2W / (0.5) * t

2 / 0.5 = 4

Jill Power = 4 * W / t

Jill’s Power is 4 times greater than John’s Power

Second Choice

19)Jill does twice as much work as Jack does and in half the time. Jill's power output is19)A)twice Jack's power output.B)the same as Jack's power output.C)one-fourth as much as Jack's power output.D)four times Jack's power output.E)one-half as much as Jack's power output.

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21)In the figure, determine the character of the collision. The masses of the blocks, and the velocitiesbefore and after, are shown.The collision is21)

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22)A railroad car collides with and sticks to an identical railroad car that is initially at rest. After thecollision, the kinetic energy of the system22)

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Physics Laboratory Manual - 4th Edition