Question

a car travells from stop A to stop B with a speed of 30 km h-1 and than returns back to A with the speed of 50 km h-1. find (1) displacement of the car. (2) distance travelled by the car. (3) average speed of the car

Answer 1

1)displacement is zero.
2)distance travelled is 2ab.
3)the average speed is37. 5m/s.