Question

A car speed increase from 40 km/hr to 60 km/hr in 5 sec. calculate the acceleration of the car ?

Answer 1

u=40 m/s

v=60 m/s

t=5 s

a=?

∵v=u+at

⇒a=v-u/t

    =60-40/5

    =20/5=4 m/s² ans

Answer 2

Answer:

Explanation:convert hr into second

And km into meter