Question

A body travels from a to b in 5 secs and covers the return journey in 15 secs. If the distance between the point is 500m find the average speed of the body.

Answer 1

Answer:

Average speed = 50 m/s

Explanation:

Given :-

Total distance = 1000 m

Total time = ( 15 + 5 ) sec = 20 sec

we know that ,

Average speed =Total distance / Total time

= 1000/20

= 50 m/s

Answer 2

Answer:

Given- t1=5sec, t2=15sec, d=500m

So, Average speed= total distance/total time

Total distance from a to b and again from b to a is 1000m.

Total time=5+15= 20sec

Therefore, average speed= 1000/20= 50m/s