Question

a car is moving at a velocity of 72 km/h. suddenly brakes are applied so as to stop the car at 10 m. find force exerted by the brakes on the car. (if the total mass of car & passengers is equal too 800 kg).

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Answer 1

Answer:

-16000N

Explanation:

V^2-U^2=2as【 initial velocity of the car is 0】

0-20^2= 2×a×10

-400=20a

a= -20m/s^2

now ,

F=MA

= 800× (-20)

= -16000N