The velocity of a particle moving along a straight line varies with time according to (in

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

The velocity of a

2\,\text{kg}

particle moving along a straight line varies with time according to

v = 3t^{2} - 2t

(in

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

, with

t

in seconds). Find the instantaneous force acting on the particle at

t = 2\,\text{s}