Boxes A, B, and C are identical. Both B and C are initially at rest when box B is struck by box A, which has an initial speed, VA of 3 ft/s. After the impact between A and B, the friction causes the speed of boxes A and B to decrease while box C speeds up until all the boxes are moving at the same speed as a single mass. a) Find the velocity of boxes A and B immediately after the impact if the two boxes stick together (in ft/s). At this time, box C has not started moving yet. [Ans. to Check: VA= 1.5 ft/s] b) Draw FBDS for (1) boxes A & B, which are now stuck together and (2) box C, which is starting to speed up, but is slipping on boxes A & B.

Boxes A, B, and C are identical. Both B and C are initially at rest when box B is struck by box A, which has an initial speed, VA of 3 ft/s. After the impact between A and B, the friction causes the speed of boxes A and B to decrease while box C speeds up until all the boxes are moving at the same speed as a single mass. a) Find the velocity of boxes A and B immediately after the impact if the two boxes stick together (in ft/s). At this time, box C has not started moving yet. [Ans. to Check: VA= 1.5 ft/s] b) Draw FBDS for (1) boxes A & B, which are now stuck together and (2) box C, which is starting to speed up, but is slipping on boxes A & B.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 81PQ

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