momentum! plz answer!
Asked by Neelimathegr8 | 22nd Mar, 2009, 02:06: PM
You should know the following formulae
Momentum p = mv.
Kinetic energy ,K = 1/2mv2 = p2/2m
1. Two bodies have different masses, say one is m and the other is M.
Their momenta are equal so mV = Mv
The smaller mass should have larger V for the momenta to be equal.
2. Use formula K = p2 /2m;
K for larger mass is p2 /2M
K for smaller mass is p2 /2m.
As p is the same for both masses, the object with larger mass will have lesser kinetic energy.
Answered by | 23rd Mar, 2009, 09:41: AM
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