Question

A particle moves along a straight line such that its displacement
at any time t is given by s = (t³– 6t² + 3t + 4) metres
The velocity when the acceleration is zero is
(a) 3 ms⁻¹ (b) – 12 ms⁻¹ (c) 42 ms⁻² (d) – 9 ms⁻¹

Answer 1

Answer:

A particle moves along a straight line such that its displacement at any time t is given by: S= t^3 -6t²+3t+4 mts. The velocity when the acceleration is zero is: Ask for details.

Answer 2

Answer:

d) -9 m/s

Explanation:

first..differentiation of ds/dt..

then we got velocity...

again differentiation of dv/dt..

now this is acceleration..put zero in this equation...u got time=2sec.

put the value of time in dv/dt..