Physics

Problem

A winch lifts a

180\,\text{kg}

crate vertically upward at a constant average power output of

550\,\text{W}

. Approximately how many seconds are required to raise the crate

6.0\,\text{m}

? (Assume

g=9.8\,\text{m}\,\text{s}^{-2}

.) a)

12\,\text{s}

32\,\text{s}

19\,\text{s}

9.6\,\text{s}