find the initial velocity of a car which is stopped in 4 seconds by ap – InterviewSolution

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1.	find the initial velocity of a car which is stopped in 4 seconds by applying brakes. the retardation due to brakes is 5 m/s².
Answer» velocity, u=? FINAL velocity, v=0m/s (car is STOPPED) Acceleration, a=−2.5m/s2 (NEGATIVE because it is retardation)TIME, t=10s Use the RELATION of the first equation of motion:v=u+at0=u+(−2.5)×10u=25m/s

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