A child is sitting on a stationary skateboard with a pile of rocks which she throws in one direction in order to make the skateboard travel in the opposite direction. If the rocks each have a mass of 0.90 kg and she can throw them with a speed of 12 m/s relative to the ground, determine the number of rocks she must throw per minute in order to maintain a constant average speed against a 1.8 force of friction. (Note: because this is a rate, the answer may not be a whole number.)

A child is sitting on a stationary skateboard with a pile of rocks which she throws in one direction in order to make the skateboard travel in the opposite direction. If the rocks each have a mass of 0.90 kg and she can throw them with a speed of 12 m/s relative to the ground, determine the number of rocks she must throw per minute in order to maintain a constant average speed against a 1.8 force of friction. (Note: because this is a rate, the answer may not be a whole number.)

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Description: A child is sitting on a stationary skateboard with a pile of rocks which she throws in one direction in order to make the skateboardtravel in the opposite direction. If the rocks each have a mass of 0.90 kg and she can throw them with a speed of 12

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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