Two particles approach each other head-on with the same speed and collide elastically. After the collision, one of the spheres, whose mass is 500 g, remains at rest. (a) What is the mass of the other sphere? (b) What is the speed of the two-sphere center of mass if the initial speed of each sphere is 3 m/s?

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter2: Relativity Ii
Section: Chapter Questions
Problem 31P: A particle of mass m moving along the x-axis with a velocity component +u collides head-on and...
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Two particles approach each other head-on with the same speed and collide elastically. After the collision, one of the spheres, whose mass is 500 g, remains at rest. (a) What is the mass of the other sphere? (b) What is the speed of the two-sphere center of mass if the initial speed of each sphere is 3 m/s?
 A 5 kg particle moves along an x axis according to x(t) = −1 + 3t + 4t2− 3t3, with x in meters and t in seconds. In unit-vector notation, what is the net force acting on the particle at t = 3 s?

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