Question

1
1
11P. A body moving in a straight line
travels with velocity v2. for the first half
time and with velocity v1. for the
second half time. What is the average
velocity for the whole journey
?
Ans:​

Answer 1

Answer:

no the body not moving in a straight line

Answer 2

Answer:

(v1+v2)/2

Explanation:

Average velocity=Total displacement /Total time

Here, as particle is travelling in a straight line, displacement =distance

Let, total time taken be 2t

Then displacement in first half time is v2*t

displacement in second half time is v1*t

Total displacement is v2t+v1t

Total time taken is t+t =2t

Average velocity = (v2t+v1t)/2t

=((v2+v1)t)/2t

=(v1+v2)/2