Question
On an air track, a 403.0 glider moving to the right at 1.70 collides elastically with a 500.5 glider moving in the opposite direction at 3.00 .
1. Find the velocity of first glider after the collision.
2.
Find the velocity of second glider after the collision.
1. Find the velocity of first glider after the collision.
2.
Find the velocity of second glider after the collision.
Answers
M1 = 0.403kg, V1 = 1.70 m/s.
M2 = 0.500kg, V2 = -3.0 m/s.
Conservation of Momentum:
M1*V1 + M2*V2 = M1*V3 + M2*V4.
0.403*1.7 + 0.50*(-3.0) = 0.403*V3 + 0.5*V4,
0.6851 - 1.50 = 0.403*V3 + 0.50*V4
Eq1: 0.403*V3 + 0.50*V4 = -0.815.
Conservation of Kinetic Energy Eq:
1. V3 = (V1(M1-M2) + 2M2*V2)/(M1+M2).
V3 = (1.7(0.403-0.5) + 1*(-3))/(0.403+0.5) = -3.50 m/s = Velocity of first glider.
2. In Eq1, replace V3 with (-3.50) and solve for V4.
M2 = 0.500kg, V2 = -3.0 m/s.
Conservation of Momentum:
M1*V1 + M2*V2 = M1*V3 + M2*V4.
0.403*1.7 + 0.50*(-3.0) = 0.403*V3 + 0.5*V4,
0.6851 - 1.50 = 0.403*V3 + 0.50*V4
Eq1: 0.403*V3 + 0.50*V4 = -0.815.
Conservation of Kinetic Energy Eq:
1. V3 = (V1(M1-M2) + 2M2*V2)/(M1+M2).
V3 = (1.7(0.403-0.5) + 1*(-3))/(0.403+0.5) = -3.50 m/s = Velocity of first glider.
2. In Eq1, replace V3 with (-3.50) and solve for V4.
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