The next four test items have to do with the Collisions in Two Dimensions experi

Question

The next four test items have to do with the Collisions in Two Dimensions experiment. Recall that two ball bearings collide and land on the large sheet of paper and carbon paper marks where they land. The collision was repeated several times and a pattern of carbon dots accumulated on the paper. If the support post for the target ball is adjusted correctly, the incident ball collides with the target ball in a plane that is parallel with the floor. In this event, essentially no external, unbalanced forces act on the two balls during the collision. Use the symbol p_rax-1 for the momentum of the target ball after the collision. Use the symbol p_rax-1 for the momentum of the incident ball before the collision and P_rax-1 for the momentum of the incident ball after the collision. Write a vector equation that relates these three moment a to one another. Since the balls are made of solid steel, their collision is very nearly one particular type. What is the name of that type of collision? Your answer to the previous question implies that some physical quantity' is conserved in this collision. What is the name and the equation for that quantity? Since the masses of the two balls are identical, this allow s the mass to divide out of the conservation equation referred to in the previous question. This suggests a particular geometrical relationship between the vectors p_inc-f and ?_tnc drawn on the large sheet. what is that relationship?

Explanation / Answer

10) Pinc-i =Ptar-f +Pinc-f

11) the type of collission is Elastic because the balls are made of a hard material and there is no energy loss.

12) The momentum in conserved and the equation that described this is: m1vi1 + m2vi2= m1vf1 + m2vf2

13) m(v1 + v2)=m(vf1 + vf2) m

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