Homework Help: physics

Posted by pavatharani on Sunday, July 3, 2011 at 10:22am.

a point moving on a straight line traversed half the distance with a velocity v0. the remaining part of the distance was covered with velocity v1 for half the time, and with velocity v2 for the other half of the time. find the mean velocity of the point averaged over the whole time.

physics - Damon, Sunday, July 3, 2011 at 10:52am
do + d1 +d2 = d
do = d/2
d1+d2 = d/2

to + t1 + t2 = t
to = do/Vo = d/2Vo

t2 = t1
t1 = d1/V1
t2 = d2/V2
so
d1/V1 =d2/V2
d2 = d1 V2/V1
so
t = d/2Vo + d1/V1 + d2/V2
average speed = d/t
= d / (d/2Vo + d1/V1 + d2/V2)
or
d/(d/2Vo + 2 d1/V1)

Answer this Question

Related Questions

Physics - def of average velocity = t^-1 (x - x0) (average velocity = t^-1(x-x0...
AP Physics - I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were ...
physics - If velocity v of particle moving in straight line is related with ...
physics - Two cars cover the same distance in a straight line. Car A covers the ...
Physics - Ironman steps from the top of a tall building. He falls freely from ...
Physics - Please help! - Ironman steps from the top of a tall building. He falls...
Physics PLEASE - I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were...
TO BOBPURSLEY - def of average velocity = t^-1 (x - x0) (average velocity = t^-1...
physics - A point moving on a straight horizontal line with an initial velocity ...
Physics - 1)A car is moving with uniform accelaration. It moves along two point ...

For Further Reading

First Name:
School Subject:
Answer: