Physics, 10.03.2021 22:40 haley5306

A man accelerates a crate across a rough, level floor with an efficiency of 50%. Which is true? Group of answer choices

Energy is not conserved, because the efficiency is less than 100%.

Part of the man’s work goes into the kinetic energy of the crate, while the other part of his work is done against friction.

The energy gained by the crate equals the work done by the man.

The work done by the man equals the distance the crate moves multiplied by the friction.

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A man accelerates a crate across a rough, level floor with an efficiency of 50%. Which is true? Gro...