An electric motor lifts a crate vertically upward in

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

An electric motor lifts a

12\,\text{kg}

crate vertically upward

5.0\,\text{m}

4.0\,\text{s}

. Twenty-five percent of the motor’s input energy is lost as thermal energy. What is the motor’s average input power? (a)

1.5\times10^{2}\,\text{W}

(b)

5.9\times10^{2}\,\text{W}

(c)

2.0\times10^{2}\,\text{W}

(d)

2.3\times10^{2}\,\text{W}