Question

A particle moves along a straight line such that its displacement at any time t is given by: S= t^3 -3t²+2m.
The displacement when the acceleration become zero is:

Answer 1

Answer:

Zero

Explanation:

First find acceleration by double differentiating displacement w.r.t. time

you will get acceleration as

a=6t-6

the time at which acceleration will become zero:

6t-6=0

t=1 sec

=> acceleration will become zero at t=1 sec

Put t=1 in expression of displacement.