A particle is acted upon by constant forces and which displace it from a point to the…

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

Problem

A particle is acted upon by constant forces

4\hat{i} + \hat{j} - 3\hat{k}

and

3\hat{i} + \hat{j} - \hat{k}

which displace it from a point

\hat{i} + 2\hat{j} + 3\hat{k}

to the point

5\hat{i} + 4\hat{j} + \hat{k}

. The work done in standard units by the forces is given by (1) 40 units (2) 30 units (3) 25 units (4) 15 units