Amys favorite games is marbels. Her favorite marble is a large steel marble with a mass of 32g. She shoots it with a speed of 24cm/s directley at a stationary, smaller glass marble with a mass of 15g. After the collision, the glass marble moves ahead with a speed of 30cm/s .
If this collision had been perfectly elastic, determine the resulting velocities of both the glass and the steel marbles.
2007-05-22 13:07:01 · 2 answers · asked by K_K 1 in Science & Mathematics ➔ Physics
Steel: M1
Glass: M2
Conservation of energy:
M1V1^2 = M1V2^2 + M2V3^2
Conservation of momentum:
M1V1 = M1V2 + M2V3
The only quantities you don't know are the two resultant velocities. So you have two equations and two unknowns.
2007-05-22 13:25:48 · answer #1 · answered by jsardi56 7 · 0⤊ 0⤋
Sorry, but what's that 30cm/s for?
v1'=(m1-m2)/(m1+m2)*v0=8.7cm/s steel
v2'=2m1/(m1+m2)*v0=32.7cm/s glass
2007-05-22 20:30:14 · answer #2 · answered by Quill86 1 · 0⤊ 0⤋