Guest

A block moves in a straight line with velocity v for time t o .Then, its velocity becomes 2v for next t o time.Finally,its velocity becomes 3v for time T. If avge.velocity during complete journey was 2.5v, then find T in terms of t o .

A block moves in a straight line with velocity v for time to.Then, its velocity becomes 2v for next to time.Finally,its velocity becomes 3v for time T. If avge.velocity during complete journey was 2.5v, then find T in terms of to.

Grade:12

1 Answers

Badiuddin askIITians.ismu Expert
148 Points
12 years ago

Dear Chilukuri Kartik

distance travels in time t0 with velocity v=vt0

distance travels in time next t0 with velocity 2v=2vt0

distance travels in time T with velocity 3v=3vT

total distance =vt0 +2vt0 +3vT

total time =t0 +t0 +T

so avg velocity ={vt0 +2vt0 +3vT}/{t0 +t0 +T}

                 2.5v     ={3vt0 +3vT}/2t0 +T}

or     2.5     =3{t0 +T}/2t0 +T}

simplify

T=4t0


Please feel free to post as many doubts on our discussion forum as you can.
 If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly.
 We are all IITians and here to help you in your IIT JEE  & AIEEE preparation.

 All the best.
 
Regards,
Askiitians Experts
Badiuddin

 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free