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March 29, 2015

March 29, 2015

Posted by **winterWX** on Monday, March 19, 2007 at 11:51pm.

Convert the speeds to m/s and use (1/2) MV^2 for the kinetic energy. Momentum is MV, but is a vector so you must account for direction changes when calculating momentum change.

You need to learn the basic concepts and try applying them yourself. We will be happy to check your work.

I'm trying to do a similar problem for: 'What is the magnitude of the change in the linear momentum of the truck?'

Can you calculate it by just subtracting the initial momentum from the final momentum? ie

Change in momentum =

M x V(final) - M x V(initial)

Using this approach I can't get the right answer but I don't know any other way to do it.

- Physics - drwls? -
**vibhor**, Saturday, June 11, 2011 at 9:46amby 110,000-76000 we get the answer 34000

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