Question

E
cample 9.3 A motorcar is moving with a
velocity of 108 km/h and it takes 4 s to
stop after the brakes are applied
Calculate the force exerted by the
brakes on the motorcar if its mass along
with the passengers is 1000 kg.​

Answer 1

Explanation:

deceleration=108km/h÷4s=30m/s÷4s.

F=1000×30÷4=7500N