Question

Find the average speed of a bus if it moves from point a to b at a speed of 30km/h and returnes at a speed of 50km/h

Answer 1

a to b = 30 km/h
b to a = 50 km/h
average speed = initial velocity + final velocity / 2
= (30 + 50)/2 = 40 km/h

Answer 2

Explanation:

speed of bus from a to b = 30km/h

speed of bus from b to a = 50 km/h

average speed = initial velocity + final velocity /2

(30+50)/2

=80/2

=40 km/h

therefore average speed is 40km/h

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