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written by Fu-Kwun Hwang
Available Languages: English, Greek, Chinese
This applet illustrates the coefficient of restitution of a bouncing ball. The coefficient of restitution, the ratio of the rebound speed to its initial collision speed when the ball bounces off a hard surface, can be adjusted by the user. The resultant collision heights provide information about energy loss. The user can also adjust the initial speed of the ball. Positions in the applets are shown making measurements and interactive exercises possible. This web page also includes descriptions of the physics of collisions and how to operate the applet.

This is part of a large collection of java simulations of physical systems. A discussion board for each simulation is available and registered users may download the program.
Subjects Levels Resource Types
Classical Mechanics
- Motion in Two Dimensions
= Projectile Motion
- Work and Energy
= Conservation of Energy
= Non-Conservative Forces
General Physics
- Properties of Matter
= Coefficient of Restitution
- Lower Undergraduate
- High School
- Instructional Material
= Activity
= Interactive Simulation
Intended Users Formats Ratings
- Learners
- application/java
- text/html
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Access Rights:
Free access
© 2001 Fu-Kwun Hwang
coefficient of restitution, coefficient of restitution, collision, energy in a spring, mechanics
Record Cloner:
Metadata instance created January 16, 2008 by Alea Smith
Record Updated:
June 1, 2011 by Lyle Barbato
Last Update
when Cataloged:
March 11, 2006
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Record Link
AIP Format
F. Hwang, (2001), WWW Document, (
F. Hwang, NTNU Java: Bouncing ball (2001), <>.
APA Format
Hwang, F. (2006, March 11). NTNU Java: Bouncing ball. Retrieved August 14, 2022, from
Chicago Format
Hwang, Fu-Kwun. NTNU Java: Bouncing ball. March 11, 2006. (accessed 14 August 2022).
MLA Format
Hwang, Fu-Kwun. NTNU Java: Bouncing ball. 2001. 11 Mar. 2006. 14 Aug. 2022 <>.
BibTeX Export Format
@misc{ Author = "Fu-Kwun Hwang", Title = {NTNU Java: Bouncing ball}, Volume = {2022}, Number = {14 August 2022}, Month = {March 11, 2006}, Year = {2001} }
Refer Export Format

%A Fu-Kwun Hwang %T NTNU Java: Bouncing ball %D March 11, 2006 %U %O application/java

EndNote Export Format

%0 Electronic Source %A Hwang, Fu-Kwun %D March 11, 2006 %T NTNU Java: Bouncing ball %V 2022 %N 14 August 2022 %8 March 11, 2006 %9 application/java %U

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Citation Source Information

The AIP Style presented is based on information from the AIP Style Manual.

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