30. When two identical air pucks with repelling magnets are held together on an air table and then released, they end up moving in opposite directions at the same speed, v. Assume the mass of one of the pucks is doubled and the procedure is repeated. a. From Newton's third law, show that the final speed of the double-mass puck is half that of the single puck. b. Calculate the speed of the double-mass puck if the single puck moves away at 0.4 m/s.

30. When two identical air pucks with repelling magnets are held together on an air table and then released, they end up moving in opposite directions at the same speed, v. Assume the mass of one of the pucks is doubled and the procedure is repeated. a. From Newton's third law, show that the final speed of the double-mass puck is half that of the single puck. b. Calculate the speed of the double-mass puck if the single puck moves away at 0.4 m/s.

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College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

-?
is
30. When two identical air pucks with repelling magnets are
held together on an air table and then released, they end
up moving in opposite directions at the same speed, v.
Assume the mass of one of the pucks is doubled and the
procedure is repeated.
a. From Newton's third law, show that the final speed
of the double-mass puck is half that of the single
puck.
b. Calculate the speed of the double-mass puck if the
single puck moves away at 0.4 m/s.

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