momentum


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Gisela F Ramirez 2H
Posts: 61
Joined: Fri Sep 28, 2018 12:27 am

momentum

Postby Gisela F Ramirez 2H » Sun Dec 09, 2018 2:58 pm

If you are given the momentum and mass of an object, and being told that it has the same momentum as a gamma ray. How do you use the momentum and mass to find the velocity of the object? Would it just be the p=mv equation?

emily gao 1C
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Re: momentum

Postby emily gao 1C » Sun Dec 09, 2018 3:05 pm

so momentum exists even if there's no mass--> E=pc :( i didn't know this either

caseygilles 1E
Posts: 73
Joined: Fri Sep 28, 2018 12:18 am

Re: momentum

Postby caseygilles 1E » Sun Dec 09, 2018 9:45 pm

Yes, when given mass of an object as having the same energy as momentum of a gamma ray we must use E=pc to solve for energy. Then we equate this energy of a gamma ray to the kinetic energy of the object, inserting our mass in. KE = 1/2 mv^2. We ca solve for the velocity of the object in this way.


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