A ball of mass m, = 0.199 kg and velocity 1.521 m/s collides elastically with a ball of mass m2 = 0.299 kg and velocity

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A Ball Of Mass M 0 199 Kg And Velocity 1 521 M S Collides Elastically With A Ball Of Mass M2 0 299 Kg And Velocity 1 (46.58 KiB) Viewed 30 times

A ball of mass m, = 0.199 kg and velocity 1.521 m/s collides elastically with a ball of mass m2 = 0.299 kg and velocity -0.3989 m/s. Assume the collision is head-on. (Express your answers in vector form. Due to the nature of this problem, do not use rounded intermediate values in your calculations-including answers submitted in WebAssign.) (a) Find their velocities after the collision (in m/s). = 0.305 m/s 21 = 1.157 X Apply the final velocity equation for elastic collisions: 2m m-m ,+ m2 m, + m2 noting that the initial velocities of the two balls are in opposite directions, so the signs for the initial velocities should reflect this m/s vzo-(m.com >) + C* V21 21 (b) Find the velocity of their center of mass before and after the collision (in m/s). cm, before 0.433 X Use VCM my, and the given information to calculate the initial center-of-mass velocity, Because M7 momentum is conserved, the center-of-mass velocity is a constant. m/s cm, after 0.513 X Use v VCM timp, and the given information to calculate the initial center-of-mass velocity. Because M momentum is conserved, the center-of-mass velocity is a constant. m/s