Question

A car acc uniformly from 18km/h in 5 sec to 36km/h. the acc of car will be

Answer 1

acceleration=change in velocity /time
i.e v-u/t
initial velocity =u = 18km/h X 5/18=5m/s
final velocity= v =36km/h X 5/18 = 10m/s
acceleration=v-u/t
                    =10-5/5
                     =1m/s2
hence acceleration in 1 meters per second

Answer 2

Acceleration=change in velocity/time

 36×5/18
=10m/s

18×5/18
=5m/s

Acc.=10-5/5
=5/5
=1m/s²