A frictional force of opposes the motion of a crate that slides on a horizontal floor

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

Problem

A frictional force of

250\,\text{N}

opposes the motion of a crate that slides

60\,\text{cm}

on a horizontal floor. Calculate the work done by the frictional force. (a)

+150\,\text{J}

(b)

-1500\,\text{J}

(c)

-150\,\text{J}

(d)

-15\,\text{J}