(adsbygoogle = window.adsbygoogle || []).push({}); Doubts regarding 3 question form motion of a particle! :)

1. The problem statement, all variables and given/known data

Doubts related to 3 problems..I have uploaded the question up in the attachment.

2. Relevant equations

3. The attempt at a solution

for question one,the body doesnt come to rest,s is the total dist at any instant after it started decelerating with retardation β.If it comes to rest,answer is 2s/v,and such a problem is there in irodovs general problems book..but how to get a general equation,for any instant after it starts decelrating with b?

question 3:i attempted using vectors and taking dot product equal to zero,but didnt arrive anywher,so someone please help! :)

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# Homework Help: Doubts regarding 3 question form motion of a particle!

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