How to Calculate the Bounces of a Bouncy Ball

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Homework Help Overview

The original poster attempts to calculate the height and number of bounces of a bouncy ball based on its mass, initial height, and local gravity. They acknowledge the complexity of the problem, noting additional factors like wind resistance and surface type, but aim to simplify their approach for a coding project in a computer science class.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Some participants question the assumptions made about the ball's behavior, suggesting that without further considerations, it would bounce indefinitely to its original height. Others recommend researching the coefficient of restitution to better understand the physics involved. One participant proposes a practical approach of conducting an experiment to gather data on the bounces.

Discussion Status

Participants are exploring different interpretations of the problem, with some offering guidance on relevant concepts like the coefficient of restitution and practical experimentation. There is no explicit consensus on a single approach, but various avenues for further investigation have been suggested.

Contextual Notes

The original poster expresses a lack of familiarity with physics concepts, which may influence their understanding and approach to the problem. They are also working within the constraints of a school assignment that requires coding a solution.

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Homework Statement
If I were to say M was mass, H was height, and G was gravity, what equation could I plug those variables into to get how high and how many times a ball would bounce after being dropped.
Relevant Equations
Mass, Gravity, and Height of ball being dropped
For school I'm trying to write some code to calculate the height of how high a ball would bounce given its mass, height, and the gravity of where it was dropped. I know there are more variables to consider, like wind resistance and the surface it was dropped on, but for now I'm trying to keep it simple.
"If I were to say M was mass, H was height, and G was gravity, what equation could I plug those variables into to get how high and how many times a ball would bounce after being dropped."
Sorry if any of this seems unclear, I know almost nothing about physics but I need to figure this out for my computer science class.
 
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Without additional assumptions the ball will bounce back to its original height indefinitely.
 
Look up coefficient of restitution.
 
Why not get yourself a bouncy ball, bounce it off the floor with some kind of scale behind it and take a video. You can estimate the maximum height after each bounce and then write the code to describe the motion. It's called data fitting. As a @harusex PF user @haruspex suggested, look up coefficient of restitution.
 
Last edited:
kuruman said:
As a @harusex
Something else on your mind?
 
  • Haha
Likes   Reactions: berkeman
haruspex said:
Something else on your mind?
Oooops, just one of them Freudian slips. :blushing:
 

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