Investigating the Bounce of a Squash Ball
This investigation is associated with the bounce of a squash ball. I
will be investigating 4 different types of squash balls, which have
different, bounce properties and compare them to each other and relate
them to why each different type of squash ball is used. The
relationship will be associated with how different balls are used at
different levels of proficiency in the game of squash i.e. the squash
balls that don't bounce much will probably used at a less proficient
level whereas the balls with the most bounce will be used at
professional level. The different coloured squash balls I will be
using are; white, yellow, red and blue, and I will be finding out what
the difference is between them.
Background Knowledge
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Pressure
The three scientists Boyle, Amontons and Charles investigated the
relationship between gas, volume and temperature. Boyle discovered
that for a fixed mass of gas at constant temperature, the pressure is
inversely proportional to its volume. So in equation form this is:
pV = constant if T is constant
Amontons discovered that for a fixed mass of gas at constant volume,
the pressure is proportional to the Kelvin temperature. So in equation
form this is:
p µ T if V is constant
Shown below this is represented on graphs in (oC) and (K).
[IMAGE] P
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[IMAGE] q/oC
-273 0
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P
0 T/K
Charles discovered that for a fixed mass of gas at constant pressure,
the volume is proportional to the Kelvin temperature. So in equation
form this is:
V µ T if p is constant.
The Equation Of State
These three gas laws that were proposed by Boyle, Amontons and Charles
can be summarised as follows:
For a fixed mass of gas
pV = constant if T = constant (i)
p/T = constant if V = constant (ii)
V/T = constant if p = constant (iii)
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