Question

a car accelarates from 18km/h to 36km/h in 10seconds..calculate it's acceleration in km/h²and m/s²

Answer 1

u=18 km/hr = 5m/s
v=36km/hr = 10m/s
t= 10 s = 10/3600hr
a=(v-u)÷t
a=(36-18)÷10/3600
=6480km/hr^2
a=(10-5)÷10
=0.5m/s^2