Question

Calculate the acceleration produced when a bus is moving with the speed 20m/s and its comes to rest in 4 sec after applying the brakes.

Answer 1

Answer:

In the given question

u=20m/s

v=0m/s

t=4s

and a=?

we know the formula v =u + at

so putting the values we get

0 = 20 + a X 4

- 20 = 4 a

-5 = a

we get acceleration is -5m/s²