A vehicle travels half the distance with speed v and the remaining distance with speed 2 v . Its average…

A vehicle travels half the distance with speed v and the remaining distance with speed 2v. Its average speed is:
  1. 3v4
  2. v3
  3. 2v3
  4. 4v3

Solution

Let the total distance travelled be d.

Time taken in both part is,

t1=d2v and t2=d22v.

Now, average speed can be written as

vavg=dt1+t2=dd2v+d4v=4v3

Asked in: NEET 2023 (All India)

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