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Question 16-20 Two particles having equal masses m are traveling along the x axis in the same direction (assumed to be frictionless) with velocities v1 and v2 respectively. Suppose that they collide and that after the collision their velocities are u1 and u2 respectively. 18. The total kinetic energy in the center of mass frame before the collision is: a) frac{m}{2}(v_{1}-v_{2})^{2} b) frac{m}{4}(v_{1}-v_{2})^{2} c) -frac{m}{2}(v_{1}-v_{2})^{2} d) frac{2m}{2}(v_{1}-v_{2})^{2} e) frac{m}{2}(v_{1}+v_{2})^{2} 19. The velocity of the center of mass after collision is:

          Question 16-20
Two particles having equal masses m are traveling along the x axis in the same direction (assumed to be frictionless) with velocities v1 and v2 respectively. Suppose that they collide and that after the collision their velocities are u1 and u2 respectively.
18. The total kinetic energy in the center of mass frame before the collision is:
a) frac{m}{2}(v_{1}-v_{2})^{2}
b) frac{m}{4}(v_{1}-v_{2})^{2}
c) -frac{m}{2}(v_{1}-v_{2})^{2}
d) frac{2m}{2}(v_{1}-v_{2})^{2}
e) frac{m}{2}(v_{1}+v_{2})^{2}
19. The velocity of the center of mass after collision is:

$Question 16-20 Two particles having equal masses m are traveling along the x axis in the same direction (assumed to be frictionless) with velocities v1 and v2 respectively. Suppose that they collide and that after the collision their velocities are u1 and u2 respectively. 18. The total kinetic energy in the center of mass frame before the collision is: a) fracm2(v1-v2)^2 b) fracm4(v1-v2)^2 c) -fracm2(v1-v2)^2 d) frac2m2(v1-v2)^2 e) fracm2(v1+v2)^2 19. The velocity of the center of mass after collision is:$

Added by Elif C.

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