A truck is moving with a velocity of 72km/h and it takes 3 s to stop after the brakes are applied. Calculate the force exerted by brakes .Mass of the truck is 1200 kg.
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Hey!
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Initial velocity = 72 km/h = 20 m/s
Final velocity = 0
Time taken to stop = 3 s
Mass of truck = 1200 kg
Force = ?
Force = Mass × Acceleration
Acceleration = ?
Final velocity - Initial velocity / Time = a
0 - 20/3 = a
a = -20/3
Force = 1200×-20/3
Force = -8000N
_______________________
Hope it helps...!!!
_______________________
Initial velocity = 72 km/h = 20 m/s
Final velocity = 0
Time taken to stop = 3 s
Mass of truck = 1200 kg
Force = ?
Force = Mass × Acceleration
Acceleration = ?
Final velocity - Initial velocity / Time = a
0 - 20/3 = a
a = -20/3
Force = 1200×-20/3
Force = -8000N
_______________________
Hope it helps...!!!
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