A motor car is moving with a velocity of 108km/hr and it takes 4 second to stop after the brakes are applied. find the force exerted by the brakes on the motor car if its mass along with the passengers is 1000kg.
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Here, v=0 m/s, u=108 m/s, t=4sec, a=?
By applying,
v = u + at
0 = 108 + a*4
a = (-108) /4 = 27 m/s^2
Now, by applying,
F = ma
= 1000*27 N (since, m = 1000 kg)
= 27000 N
By applying,
v = u + at
0 = 108 + a*4
a = (-108) /4 = 27 m/s^2
Now, by applying,
F = ma
= 1000*27 N (since, m = 1000 kg)
= 27000 N
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