Question

A car increases its speed from 20 km/h to 30 km/h in 10 seconds. its acceleration is a) 30 m/s b) 3 m/s c) 18 m/s d) 0.83 m/s calculate

Answer 1

Final velocity (v)=30km/h=8.3m/s
Initial velocity(u)=20km/h=5.5m/s
Time=10s
Acceleration (a)=v-u/t
8.3-5.5/10
0.28m/s^2