Question

A particle moves in a straight line with a constant acceleration. It changes its velocity from 10 ms to 20 ms while passing through a distance 135 m in t second . The value of t is ?
(1) 9
(2) 10
(3) 1.8
(4) 12

Answer 1

Given: v =20m/s

u =10m/s

S = 135 m

Then by

v^2 -u^2=2as

So from here we have ;

a = 0.9m /s^2

Then by formula

v-u= at

We have

t = 12sec

Answer 2

Answer:

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Explanation:

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