A constant force of magnitude acts on a body moving with speed

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

Problem

A constant force of magnitude

10\,\text{N}

acts on a body moving with speed

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

. The force is always perpendicular to the direction of motion. The instantaneous power supplied by the force is (a)

50\,\text{W}

(b)

25\,\text{W}

(c)

0\,\text{W}

(d)

10\,\text{W}