Question

a car of mass 450kg is stopped in 24 second by applying a force of 600N on the brakes of the car. find the initial velocity of the car.​

Answer 1

question :-

a car of mass 450kg is stopped in 24 second by applying a force of 600N on the brakes of the car. find the initial velocity of the car.

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Solution :-

Given values:-

Mass of car = 450 kg

➠ V = 24 m/ s

➠ Friction face = 600 N

To Find :-

➠ Time taken by brakes to come at rest ?

➠ Acceleration = - F/M

➠ - 600/450 = - 6m / s^2

Then,

➠ V = U + at

➠ O = 30 - 6 × t

➠ t = 30 / 6

Final answer :-

➠ 5 sec

Answer 2

hope this may help you dear