Question

A car travelling at a speed of 30m/s comes to rest in 5 second. Calaclate its average speed

Answer 1

Answer:

150m in 5 sec

hope it is correct

Answer 2

Explanation:

u=30m/s

v=0

t=5s

a= 0-30/5

= -6m/s²

Since,retardation is uniform,then average speed------

u+v/2

0+30/2

30/2

=15m/s