Math Is Fun Forum

Patjamet

Member

Registered: 2009-06-20

Posts: 5

Dynamics/motion under gravity problem...

Hey guys, just require some help with some 12 maths C homework..

The question asks for the distance travelled by a 5kg mass when it comes to rest, with an initial velocity of 14m/s. The only force acting on the object is friction, F = 0.2v+5 Newtons.

Where v = velocity.

I've already found one part of the question, the equation for velocity with respect to time:

t = time

Please give me some tips/show me a method for finding the distance travelled by the mass when it comes to rest... I'd prefer just some friendly advice/to be pointed in the right direction because I really want to learn this stuff, but if showing an exact method is easier then go ahead.

I've tried many a thing. But I cannot seem to make any sense out of it.

Last edited by Patjamet (2009-07-27 21:24:19)

Patjamet

Member

Registered: 2009-06-20

Posts: 5

Re: Dynamics/motion under gravity problem...

Never mind, I found the solution

Definite integrals are your friend.