Question

A car moving with 20m/s is brought to rest by applying brakes in 5 sec.calculate distance travelled by the car.atha

Answer 1

Step-by-step explanation:

t=d/s

d=t*s

d=5s*20m/s

d=100m

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Answer 2

Answer:

4m/s2

Step-by-step explanation:

Given,

u = 20m/s

v = 0m/s

t = 5s

 

Using , v = u + at

=> 0 = 20 + a*5

=> a = -20/5 = - 4 m/s2

So, retardation of car = 4m/s2