Question

A car travelling at 60km/h uniformly retards for 10s and attains a velocity of 45 km/h. Find the retardation

Answer 1

Hey friend
here is your answer

initial velocity ( u ) = 60 km/hr
final velocity ( v ) = 45 km/hr
time ( t )= 10 sec

$as \\ a = \frac{v - u}{t} \\ a = \frac{45- 60}{10} \\ a = \frac{ - 15}{10} \\ a = - 1.5m {sec}^{ - 2}$
so, retardation ( a ) = - 1.5 m/sec^2


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