linz3890 linz3890
  • 25-10-2022
  • Physics
contestada

a point mass slides with speed v on a frictionless horizontal surface between two fixed parallel walls, initially a distance l apart. it bounces between the walls perfectly elastically. you move one of the walls towards the other by a distance 0.01l, with speed 0.0001v. what is the final speed of the point mass?

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