posted by cake .
Use the equations below:
2) A linear air track can be used to investigate collisions. Two trolleys or “gliders” are supported on a cushion of air. A glider of mass 0.30kg is stationary in the middle of the track. A second glider of mass 0.25kg and velocity of 0.20ms-1 collides with the first glider and they stick together.
You may assume that this collision is perfectly elastic.
A) What is meant by a “perfectly elastic” collision?
B) Calculate the velocity of the glider combination immediately after the collision.
please help with B
is it 0.5 * 0.2= 0.11
then 0.11=1/0.55*0.20^2 though i dont think that makes much sense
please use full words and no symbols and lay it out with steps clearly fullwords pklease
Please pick ONE screenname and keep it. Playing games with screennames is not helpful, nor will it get you help any sooner!
You are missing the point. Conservation of Momentum applies, that is the point.
for the system:
initial momentum=final momentum
0.25 x 0.2+ 0.25 x 0.2 = (0.25+0.25)V
Is this what u meant because what you wrote is confusing
also i think it is supposedto be 0.25 x 0.2+ 0.3 x 0 = (0.25+0.3)V as one of the trolley is 0.3kg so am i right?
i mean the momentum bef and aft with those letter just to be clear and help