A ball is held at rest at some height above a horizontal surface.  Once the ball is released it falls under gravity, hits the surface at time T1 , and starts bouncing vertically up and down. Suppose that with each bounce the ball loses a fixed fraction p (with 1>p>0) of its energy. This loss could be due to a number of reasons (inelasticity, drag, etc) that are left unspecified. How many times will the ball bounce before coming to rest? Provide a detailed explanation of your reasoning, not simply a one-line answer. How long will it take for the ball to come to rest (if at all), i.e., what is the stopping time Tstop? Give your answer for Tstop as a single formula that contains only two independent variables, namely p and the time T1 .

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
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A ball is held at rest at some height above a horizontal surface.  Once the ball is released it falls under gravity, hits the surface at time T, and starts bouncing vertically up and down. Suppose that with each bounce the ball loses a fixed fraction p (with 1>p>0) of its energy. This loss could be due to a number of reasons (inelasticity, drag, etc) that are left unspecified.

  1. How many times will the ball bounce before coming to rest? Provide a detailed explanation of your reasoning, not simply a one-line answer.
  2. How long will it take for the ball to come to rest (if at all), i.e., what is the stopping time Tstop? Give your answer for Tstop as a single formula that contains only two independent variables, namely p and the time T.
A ball is held at rest at some height above a horizontal surface. Once the ball is released, it falls under gravity, hits the surface at time \( T_1 \), and starts bouncing vertically up and down. Suppose that with each bounce the ball loses a fixed fraction \( p \) (with \( 1>p>0 \)) of its energy. This loss could be due to a number of reasons (inelasticity, drag, etc.) that are left unspecified.

1. How many times will the ball bounce before coming to rest? Provide a detailed explanation of your reasoning, not simply a one-line answer.

2. How long will it take for the ball to come to rest (if at all), i.e., what is the stopping time \( T_{\text{stop}} \)? Give your answer for \( T_{\text{stop}} \) as a single formula that contains only two independent variables, namely \( p \) and the time \( T_1 \).
Transcribed Image Text:A ball is held at rest at some height above a horizontal surface. Once the ball is released, it falls under gravity, hits the surface at time \( T_1 \), and starts bouncing vertically up and down. Suppose that with each bounce the ball loses a fixed fraction \( p \) (with \( 1>p>0 \)) of its energy. This loss could be due to a number of reasons (inelasticity, drag, etc.) that are left unspecified. 1. How many times will the ball bounce before coming to rest? Provide a detailed explanation of your reasoning, not simply a one-line answer. 2. How long will it take for the ball to come to rest (if at all), i.e., what is the stopping time \( T_{\text{stop}} \)? Give your answer for \( T_{\text{stop}} \) as a single formula that contains only two independent variables, namely \( p \) and the time \( T_1 \).
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