Question

A car is moving on a straight road with a speed 20m/s and the rest with a speed of 60km/hr. the average speed of the car is

Answer 1

V1=20m/s

=20*18/5kmph

=72kmph

V2=60kmph

avg.velocity(V)=2V1V2/V1+V2

=2(72)(60)/60+72

=720/11