The work you do when pushing a shopping cart twice as far while applying the same force is

A) half as much.
B) twice as much.
C) four times as much.
D) the same amount.


Answer: B

Physics & Space Science

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A 2.0-kg mass is projected from the edge of the top of a 20-m tall building with a velocity of 24 m/s at some unknown angle above the horizontal. Disregard air resistance and assume the ground is level. What is the kinetic energy of the mass just before it strikes the ground?

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In the wave model, light is ________.

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