Question

a car speed increases from 40km/hr to 60km/hr in 5 seconds find its accelaration

Answer 1

acceleration = Change in velocity

                  Time taken for the change

                       =  v - u / t

FIRST WE WILL CONVERT THE VELOCITY INTO ITS SI UNIT.

40 km/hr = 11.11 m/s

60 km/hr = 16.66 m/s

= v - u

     t

= 16.66 - 11.11

            5

= 5.55 / 5

= 1.11