Question

An object covers first half of total distance with constant speed v1 and second half of total distance with constant speed v2 . If the object is moving in a straight line ,then the average speed for the entire trip is

Answer 1

Let total distance :- 2s
t1 = s/v1 ; t2 = s/v2
Avg. Speed = 2s/(s/v1 + s/v2) = 2v1v2/(v1+v2)

Answer 2

Answer:

Explanation:

Let total distance :- 2s

t1 = s/v1 ; t2 = s/v2

Avg. Speed = 2s/(s/v1 + s/v2) = 2v1v2/(v1+v2)