Question

A car is moving with a uniform speed of 7.2 m/s. On applying brakes it stops after covering distance of 200 m. Assuming constant deceleration, how long would it take for the car to come to rest?

14s
28s
56s
72s
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Answer 1

You're answer is in the picture ✌️

Answer 2

Answer:

225

Explanation:

Initial velocity or speed u=15m/s

The acceleration a=−0.5m/s2

When vehicle stops its final velocity becomes zero v=0

By applying equation of motion 

v2=u2+2aS

0=225−2×0.5SS=2×0.5225=225m

hope it helps u...