Question

The brakes applied to a car produce an acceleration of 10m/ s2 in the opposite direction to the motion. If the the car takes 0.2 minute to stop after the application of brakes , Calculate the distance it travelled during this time.

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Answer 1

Answer:

Given:

Accerleration: a=−6 m/s

2

Time t=2 s

Final velocity, v=0 m/s

v=u+at

0=u−6×2

u=12 m/s

s=ut+

2

1

at

2

s=12×2+

2

1

×(−6)×4

⇒s=12 m