Question

A car travels a distance A to B at a speed of 56 km/h and returns to A at a speed of 72 km/h. (1) What is the average speed for the whole journey? (ii) What is the average velocity?​

Answer 1

Explanation:

speed of car from A to B = 56km/h

speed of car form B to A = 72km/h

Total distance/time = 128km/2h

Average speed = Total distance / total time

= 128/2

= 64km/h.

sorry I don't know how to calculate velocity:(

hope this helps :)