Displacement of a particle, moving in a straight line, is given by s = 2{t^2} + 2t + 4 where s is in

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2.Motion in Straight Line

easy

The displacement of a particle, moving in a straight line, is given by $s = 2{t^2} + 2t + 4$ where $s$ is in metres and $t$ in seconds. The acceleration of the particle is........$ms^{-2}$

A

$2$

B

$4$

C

$6$

D

$8$

Solution

(b)$s = 2{t^2} + 2t + 4,\;a = \frac{{{d^2}s}}{{d{t^2}}} = 4\,m/{s^2}$

Standard 11

Physics

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