Question

Find the initial velocity of a car which is stoked in 10 seconds by applying brakes. The retardation due to brakes in 2.5m/s square

Answer 1

hey your ans is here

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given
initial velocity =?
final velocity =0
time =10
retardation =2.5
so
acceleration =-2.5


now

a=v-u/t
-2.5=0-u/10
-2.5=-u/10
u or initial velocity =25m/sec

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Answer 2

hope it helps:)

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