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Force, acceleration and velocity during trampoline jumps - A challenging assignment

Pendrill, Ann Marie LU and Ouattara, Lassana LU (2017) In Physics Education 52(6).
Abstract

Bouncing on a trampoline lets the jumper experience the interplay between weightlessness and large forces on the body, as the motion changes between free fall and large acceleration in contact with the trampoline bed. In this work, several groups of students were asked to draw graphs of elevation, velocity and acceleration as a function of time, for two full jumps of the 2012 Olympic gold medal trampoline routine by Rosannagh MacLennan. We hoped that earlier kinaesthetic experiences of trampoline bouncing would help students make connections between the mathematical descriptions of elevation, velocity and acceleration, which is known to be challenging. However, very few of the student responses made reference to personal experiences of... (More)

Bouncing on a trampoline lets the jumper experience the interplay between weightlessness and large forces on the body, as the motion changes between free fall and large acceleration in contact with the trampoline bed. In this work, several groups of students were asked to draw graphs of elevation, velocity and acceleration as a function of time, for two full jumps of the 2012 Olympic gold medal trampoline routine by Rosannagh MacLennan. We hoped that earlier kinaesthetic experiences of trampoline bouncing would help students make connections between the mathematical descriptions of elevation, velocity and acceleration, which is known to be challenging. However, very few of the student responses made reference to personal experiences of forces during bouncing. Most of the responses could be grouped into a few categories, which are presented and discussed in the paper. Although the time dependence of elevation was drawn relatively correctly in most cases, many of the graphs of velocity and acceleration display a lack of understanding of the relation between these different aspects of motion.

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Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Education
volume
52
issue
6
publisher
IOP Publishing
external identifiers
  • scopus:85032230255
ISSN
0031-9120
DOI
10.1088/1361-6552/aa89cb
language
English
LU publication?
yes
id
93ec9d95-b7ac-4874-b584-4fd33ca76332
date added to LUP
2017-11-07 12:34:37
date last changed
2018-01-14 04:36:48
@article{93ec9d95-b7ac-4874-b584-4fd33ca76332,
  abstract     = {<p>Bouncing on a trampoline lets the jumper experience the interplay between weightlessness and large forces on the body, as the motion changes between free fall and large acceleration in contact with the trampoline bed. In this work, several groups of students were asked to draw graphs of elevation, velocity and acceleration as a function of time, for two full jumps of the 2012 Olympic gold medal trampoline routine by Rosannagh MacLennan. We hoped that earlier kinaesthetic experiences of trampoline bouncing would help students make connections between the mathematical descriptions of elevation, velocity and acceleration, which is known to be challenging. However, very few of the student responses made reference to personal experiences of forces during bouncing. Most of the responses could be grouped into a few categories, which are presented and discussed in the paper. Although the time dependence of elevation was drawn relatively correctly in most cases, many of the graphs of velocity and acceleration display a lack of understanding of the relation between these different aspects of motion.</p>},
  articleno    = {065021},
  author       = {Pendrill, Ann Marie and Ouattara, Lassana},
  issn         = {0031-9120},
  language     = {eng},
  month        = {11},
  number       = {6},
  publisher    = {IOP Publishing},
  series       = {Physics Education},
  title        = {Force, acceleration and velocity during trampoline jumps - A challenging assignment},
  url          = {http://dx.doi.org/10.1088/1361-6552/aa89cb},
  volume       = {52},
  year         = {2017},
}