Question

a motorcar is With a velocity of 108 km/h and it takes 5 sec to stop after the break are applied. calculate the force exerted by the breaks on the motorcar if its mass along with the passenger is 1000 kg.​

Answer 1

ANSWER

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.

Explanation:

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Answer 2

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