A motor car is moving with a velocity of 108 km/h nd it takes 4s to stop after the brakes are applied. Calculate the force exerted by the brakes on the motorcar if it's mass along with the passengers is 1000kg.
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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.
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Answered by
0
Answer:
Total mass of the motor car along with its passengers (m) = 1000 kg. Time is taken to stop the motor car (t) = 4 sec
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