Velocity acquired by a body moving with uniform acceleration is 30,ms ^{-1} in 2 seconds and 60,ms ^

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2.Motion in Straight Line

easy

The velocity acquired by a body moving with uniform acceleration is $30\,ms ^{-1}$ in $2$ seconds and $60\,ms ^{-1}$ in four seconds. The initial velocity is $.............\frac{m}{s}$

A

$4$

B

$0$

C

$2$

D

$10$

Solution

(b)

$30=u+2 a$

$60=u+4 a$

Solving, $u =0 m / s$

Standard 11

Physics

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