Question

A bus moving along a straight line at 20m/s under goes an acceleration of 4m/s. After 2 sec ,it's speed will be. (I) 8m/s (ii) 12m/s (III) 6m/s (IV)28m/s​

Answer 1

Answer:

U=20m/s

a=-4m/s^2

t=2s

v=?

v=u+at

v=20+(-4)(2)

v=20-8

v=12m/s