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# Bounce efficiency test on various surfaces.

Extracts from this document...

Introduction

Bounce efficiency test on various surfaces.

Introduction.

This is an experiment to see how high a ball will bounce on the different surfaces. We will use 5 different surfaces – concrete , wood , grass , lino and carpet material.To do this we must use the same size ball to reduce excess drag and drop it from the same height each time . That is one variable (surface type) , the other is ball material – tennis ball , golf ball , bounce ball , cricket ball and baseball . We would drop it from the same height each time . We try bouncing the ball from

Middle

If I changed the ball it would bounce at :

70% with a tennis ball

30% with a base ball

20% with a golf ball

35% with a cricket ball

80% with a bounce ball

as a soft ball would spring back but lose lots of energy through sound , heat , and change of shape. I have chosen to use surfaces as my variable.

## Method

We will by eye drop a ball from a definite height (from the same person each time) onto a different surface at least 3 times, we then observe how high it rebounds , take the results , then insert and compare them in a table.

Conclusion

ed (cm)

Height bounced (cm)

Average (cm)

Efficiency (%)

## Lino

Grass

Wood

Concrete

Carpet

To work out the efficiency percentage we divide height bounced by height dropped then multiply the answer by 100.

This student written piece of work is one of many that can be found in our GCSE Height and Weight of Pupils and other Mayfield High School investigations section.

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