- #1
lonewolf219
- 186
- 2
Before the collision, there are two masses. Mass 1 is at rest and mass 2 is moving. No friction. It is an elastic collision and mass 2 is moving in positive x direction.
After the collision, is it correct that mass 1 moves in positive x direction but mass 2 rebounds and moves in negative x direction? If so, is this the equation for momentum:
m[itex]_{2}[/itex]v[itex]_{2i}[/itex]=m[itex]_{1}[/itex]v[itex]_{1f}[/itex]-m[itex]_{2}[/itex]v[itex]_{2f}[/itex]
And the equation for KE:
[itex]_{2}[/itex](v[itex]_{2i}[/itex])^2=m[itex]_{1}[/itex](v[itex]_{1f}[/itex])^2+m[itex]_{2}[/itex](v[itex]_{2f}[/itex])^2
And if solving for v[itex]_{1f}[/itex] :
v[itex]_{1f}[/itex]=[itex]\sqrt{\frac{m_{2}(v_{2i})^2}{m_{1}}}[/itex]
And the velocity of this mass should be in the positive x direction.
Does everything look correct?
After the collision, is it correct that mass 1 moves in positive x direction but mass 2 rebounds and moves in negative x direction? If so, is this the equation for momentum:
m[itex]_{2}[/itex]v[itex]_{2i}[/itex]=m[itex]_{1}[/itex]v[itex]_{1f}[/itex]-m[itex]_{2}[/itex]v[itex]_{2f}[/itex]
And the equation for KE:
[itex]_{2}[/itex](v[itex]_{2i}[/itex])^2=m[itex]_{1}[/itex](v[itex]_{1f}[/itex])^2+m[itex]_{2}[/itex](v[itex]_{2f}[/itex])^2
And if solving for v[itex]_{1f}[/itex] :
v[itex]_{1f}[/itex]=[itex]\sqrt{\frac{m_{2}(v_{2i})^2}{m_{1}}}[/itex]
And the velocity of this mass should be in the positive x direction.
Does everything look correct?