Question

find the initial velocity of a car which is stopped in 10seconds by applying brakes. the aetordation due to brakes in 2.5m/s.​

Answer 1

t=10 secs,a=2.5 m/s^2,v=0,u=?

v=u+at

=>0=u+2.5*10

=>0=u+25

so,u=25m/s

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Answer 2

Answer:

Using the eqn , V=U+at

V=0 as it comes to rest after applying brakes.

u= x

a=2.5m/s2

t=10 s

0=x+25

so the Initial velocity is 25m/s !

Hope this helps you.