Question

A boy travels from A to B at 20m/s and then from B to A 30m/s. Calculate the average speed and average velocity.

Answer 1

Let time taken from A to B be T1 and Time taken from B to A be T2

So, T1= S/V1 ( S= distance and V1= speed)

T1 = S/ 20

Similarly T2= S/30

Therefore avg.speed = total distance /total time

= S + S/ S/20 + S/30

taking s common...

= 2 / 1/20 + 1/30

= 2×20×30/ 20 + 30

= 1200 / 50

= 24 m/s

Answer 2

Answer:

Avg. Velocity would be 25m/s

Explanation:

You should find the mean of t1 and t2.

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