Question

Carts A and B move directly toward each other and collide perfectly elastically. They move off from the collision directly away from each other. The mass of B is N times the mass of A. Before the collision, A is moving toward B at a speed of vo; after the collision, B is at rest, and A moves off at a speed of -Vf. Calculate the speed of cart B before the collision. NOTES: Enter an algebraic expression. Be sure your answer includes only the symbols given in the problem. Enter vo by typing v_0; enter ug by typing v_f. U Bi v_0-v f

Answer 1

A A B il 0 B k Ubi Vf UBC=0 mass of B, MB = N(Mass of A) = NMA 2 so if mass of A, MA zm & MB = Nhi Applying consequation of clinear momentum before and after collision, as the collision is elastic, we get = (PA+PB) Before collaisu after collision (MAVA + Mg Up) (MAVO + Mg We Before after mu _Nmusi - m(-ve) + NMCO) (la Pole miut me = nmulai SUNDAY 10 Usi a Yo the