Displacement of a body in 8,s starting from rest with an acceleration of 20,cm / s ^2 is ...........

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2.Motion in Straight Line

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The displacement of a body in $8\,s$ starting from rest with an acceleration of $20\,cm / s ^2$ is $............$

A

$64\,m$

B

$64\,cm$

C

$640\,cm$

D

$0.064\,m$

Solution

(c)

$s=\frac{1}{2} a t^2=\frac{1}{2} \times(0.2)(64)=6.4\,m =640\,cm$

Standard 11

Physics

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