Question

please do all parts!

Problem 10.56 Ball 1, with a mass of 140 g and traveling at 15 m/s, collides head on with ball 2, which has a mass of 350 g and is initially at rest. Part A What is the final velocity of the ball 1 if the collision is perfectly elastic? Express your answer in meters per second. Η ΑΣΦ m/s Submit Request Answer Part B What is the final velocity of the ball 2 if the collision is perfectly elastic? Express your answer in meters per second. Η ΑΣΦ

Answer 1

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2 2 Problem 10.56 m = 140 x103 kg = 0.14 kg a = 15 m/s m = 0.35kg U2 = 0. Part A Acc to conservation of momentum muit muz= mv, t mua (0.14) (15) +0 -0.14 Vito. 35 V₂ - ① V₂ - U = U, -a = 15 = = Vitis 0.140, +0.35 (Vitis) 2.1 o.4av, t 5.25. 0,4qu, = - 3.15 V = -6.428 m/s part B va 2 = 4,285 m/s - Vit 15 = - 6.428 + 15 = 8.572 m/s hartc. In inelastic mu,+ m 2 =(m, 2 m ) v 2.1 0.49 V = 4,285 m/s Part Di- V2 = 4.285 m/s inelastic collision both have common velocity [since in will