Question

a 1500kg car is moving with a speed of 50m/s . when brakes are applied it stops with uniform retardation atva distance of 150m. calculate the force applied by brakes of the car and work done before stopping​

Answer 1

Answer:

12500 N

Explanation:

m = 1500 kg

s = ut + 1/2 axtxt

150 = 50t + 1/2 x v-u/t x t x t

150= 50t + 1/2 x -50t

150 = 50t -25t

150/25 =t

t = 6 s

F = ma

= 1500 x v - u /t

= 1500 x -50 / 6

= 12500 N

Answer 2

Explanation:

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