Question

A car is moving with a velocity of 72 km/h and it takes 5 s to stop after
the brakes are applied. Calculate the force exerted by the brakes on
the car if its mass along with the passengers is 1500 kg.

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Answer 1

Answer:

f=-7500N

Explanation:

Force=mass*acceleration

f=m×

t

v−u

f=1000×

4

0−108×

18

5

=1000×(−7.5)

∴f=−7500N

opposing force is denoted by negative sign.

Answer 2

Explanation:

Ya the answer is correct but you should see and write the steps to the problem ok

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