Two blocks of ice, one four times as heavy as the other, are at rest on a frozen
ID: 1313409 • Letter: T
Question
Two blocks of ice, one four times as heavy as the other, are at rest on a frozen lake. A person pushes each block the same distance d. Ignore friction and assume that an equal force F? is exerted on each block. Which of the following statements is true about the kinetic energy of the heavier block after the push?
It is smaller than the kinetic energy of the lighter block.
It is equal to the kinetic energy of the lighter block.
It is larger than the kinetic energy of the lighter block.
It cannot be determined without knowing the force and the mass of each block.
Explanation / Answer
W= Change in kinetic energy.
So, if work done is same, so is kinetic energy.
It is equal to the kinetic energy of the lighter block.
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