A force acts on a body whose displacement varies as

PHYSICS · Single correct · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

A force

\mathbf{F}=(3t\hat{i}+5\hat{j})\,\text{N}

acts on a body whose displacement varies as

\mathbf{s}=(2t^2\hat{i}-5\hat{j})\,\text{m}

. The work done by this force in

2\,\text{s}

is (1) 32 J (2) 24 J (3) 46 J (4) 20 J