Investigation of Different Variabes' Effect on the Rate of Bounce of a Squash Ball
Aim:
The aim of this experiment is to find out and observe how different
variables affect the rate of bounce on a squash ball. There are many
variables that affect the rate of this reaction such as the following:
1. Drop Height (Meters)
2. Surface (e.g. Grass, tarmac etc)
3. Temperature of ball (°C)
4. Drop/Throw (Force)
5. Air Drag
6. Angle*
7. Area
8. Mass of ball
9. Pressure of air in ball
10. Material of ball
Outcome:
Height of bounce between first and second bounce.
In my investigation I will be testing how changing the angle affects
the distance between the first and second bounce of a squash ball. I
will do various experiments and then evaluate the results and come to
a conclusion.
Introduction:
Collision theory - Collisions between reactant particles are needed
for the reaction to take place in order to form a product. Some
collisions are successful and give a product while others don't
because particles don't have enough energy.
Activation energy - The amount of energy needed for the reaction to be
started. If there is enough energy then the reaction takes place and a
product is formed, but if there isn't enough then no reaction takes
place.
Terminal Velocity - Maximum velocity which a freely falling object
reaches when it is falling through a viscous (semi-fluid) medium such
as air. If the effects of the medium through which a body is falling
towards the Earth were ignored, the body would, theoretically,
continue to accelerate until it hit the ground....
... middle of paper ...
... what I thought would happen did.
At this point I am able to answer my main hypothesis which was 'How
does changing the angle affect the distance between the 1st and 2nd
bounce' the answer to this would be that changing the angle of drop
would either have a greater gap between the two bounces or a decrease
between the two bounces.
Overall this was a very successful experiment and everything went very
smoothly, and that was why my results were very good, and I am able to
make a conclusion like this.
Bibliography:
Books:
New Modular Science for GCSE
The New Book of Knowledge
GCSE Science
CD-ROM's:
Microsoft, Encarta, Encyclopaedia Deluxe 2000
Britannica, Encyclopaedia Deluxe 2000
Software Programs:
Microsoft Office XP Professional (Student Licence)
Microsoft Word 2000
Also, the equations for Potential energy and Kinetic energy are stated to get the Total Energy. They are respectively:
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