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finding velocity

 
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annmarieabbitt



Joined: 16 Mar 2011
Posts: 1
Location: citronelle high school
PostPosted: Thu Mar 17, 2011 6:59 pm    Post subject: finding velocity Reply with quote
what velocity must a 2320kg bus have in order to have the same momentum as a trolley with a velocity of 65m/s and a mass of 5750kg?
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hepcj
Site Admin


Joined: 23 Jun 2007
Posts: 121
PostPosted: Sun Mar 20, 2011 9:26 pm    Post subject: Reply with quote
The momentum of an object is given by it mass x velocity.

http://www.splung.com/content/sid/2/page/momentum

You can work out the velocity of the bus by equating the mass of the bus x its unknown velocity with the mass of the trolley x velocity of the trolley.

Solve for the velocity of the bus. You can work it out the numbers.
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