Question

PLS HELP ME ITS URGENT
A boy goes from A to B with a speed of 30 m/min and comes back from B to A with a speed of 60 m/min. The average speed of the boy during the whole journey is
24 m/min
45 m/min
Zero
40m/min

Answer 1

Answer:

Correct option is

A

zero

Average velocity =Total timeTotal displacement

Since, in this case, the particle initial and final points are the same, therefore its Displacement =0.

∴Average velocity=0

Explanation:

please mark me a brainlist answer

Answer 2

PLS HELP ME ITS URGENT
A boy goes from A to B with a speed of 30 m/min and comes back from B to A with a speed of 60 m/min. The average speed of the boy during the whole journey is
24 m/min
45 m/min
Zero
40m/min