A white billiard ball, moving horizontally strikes a red billiard ball, at rest. Before impact, the white ball was moving at a speed of 2.50 m/s and angle of 21° from the horizontal, and after impact it is moving at 0.50 m/s at 45° from the horizontal. a. If the two balls have equal masses of 160 g, what is the velocity of the red ball after the impact? Include its magnitude and direction. b. Is the collision elastic? Show how you know this.

A white billiard ball, moving horizontally strikes a red billiard ball, at rest. Before impact, the white ball was moving at a speed of 2.50 m/s and angle of 21° from the horizontal, and after impact it is moving at 0.50 m/s at 45° from the horizontal. a. If the two balls have equal masses of 160 g, what is the velocity of the red ball after the impact? Include its magnitude and direction. b. Is the collision elastic? Show how you know this.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter4: Two-and-three Dimensional Motion

Section: Chapter Questions

Problem 21PQ: Anthony carelessly rolls his toy car off a 74.0-cm-high table. The car strikes the floor a...

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