A student pushes a lawn mower with a horizontal force of at a steady speed of

PHYSICS · Single correct · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

A student pushes a lawn mower with a horizontal force of

60\,\text{N}

at a steady speed of

1.5\,\text{m\,s}^{-1}

. Calculate the power developed. (a)

40\,\text{W}

(b)

100\,\text{W}

(c)

90\,\text{W}

(d)

60\,\text{W}