Question

A motor car is moving with a velocity of 108 km/h and it takes 4 s to stop after the brakes are applied. Find the force exerted by the brakes on the motor car if its mass along with the passengers is 1000 kg.

Answer 1

v = 0m/s

u = 108m/s

t = 4s

a = v-u/t

= 0-108/4

=27m/s²

F = m*a

= 1000*27

= 27000 N

Answer 2

Answer:

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