An automobile moving with a uniform velocity of 500 ms-1 is brought to

1.	An automobile moving with a uniform velocity of 500 ms-1 is brought to rest in travelling a distance of 5m. What is the acceleration produced by the brakes?
Answer» Initial velocity of the car, u = 500 ms^-1 Final velocity of the car v = 0 Let a be the acceleration of the car. Then using the relation. v² = u²+ 2aS 0² = 500² + 2a × 5 a = -500²/10 = – 25 × 10³ms^-2.

An automobile moving with a uniform velocity of 500 ms-1 is brought to rest in travelling a distance of 5m. What is the acceleration produced by the brakes?

Answer»

Initial velocity of the car, u = 500 ms^-1

Final velocity of the car v = 0

Let a be the acceleration of the car. Then using the relation.

v² = u²+ 2aS

0² = 500² + 2a × 5

a = -500²/10 = – 25 × 10³ms^-2.