4. Two identical, hard , spherical balls X and Yeach of mass m, are travelling in oppositedirections, with the same speed u. If theycollide elastically on a friction - free surface,which of the statements below best describestheir motion?A They stick together on impact, andinstantaneously come to restB The total energy of the system is conservedC The energy before collision is greater thanthat after collisionD The total kinetic energy just after impact ismu?

Two identical, hard, spherical balls X and Y each of mass m, are travelling in opposite directions, with the same speed u. If they collide elastically on a friction - free surface, which of the statements below best describes their motion?

Two identical, hard, spherical balls X and Y each of mass m, are travelling in opposite directions, with the same speed u. If they collide elastically on a friction - free surface, which of the statements below best describes their motion?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter6: Momentum, Impulse, And Collisions

Section: Chapter Questions

Problem 3CQ: Two carts on an air track have the same mass and speed and are traveling towards each other. If they...

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Question

4. Two identical, hard , spherical balls X and Y
each of mass m, are travelling in opposite
directions, with the same speed u. If they
collide elastically on a friction - free surface,
which of the statements below best describes
their motion?
A They stick together on impact, and
instantaneously come to rest
B The total energy of the system is conserved
C The energy before collision is greater than
that after collision
D The total kinetic energy just after impact is
mu?

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