Question

A car moving at 60ms–²is caused to stop 3s.Its average deceleration in ms–² is

Answer 1

Answer:

V=0 as the car stops in 3sec

u=60 m/s

t=3 sec

Decceleration mean s negative acceleration (-a)

V=u-at

U=-at

-a=60/3

a=-20 m/s2

I hope this helps ( ╹▽╹ )