Question

if the car has a mass of 1000kg calculate the breaking force applied to the car ​

Answer 1

• Final velocity, v=0

• Initial velocity, u=30ms −1

• Force = mass x acceleration

• F=ma a=F/m=−5000/1000=−5ms −2

From the First equation of motion,

v=u+at

0=30+(−5t)0=30−5t5t=30

t=30/5

t=6

Hence, after6sec car will stop.

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