GENERALTO DETERMINE WHICH SURFACE GIVES

THE BALL TO BOUNCE HIGHER AND WHY DOES IT BOUNCE.

SPECIFIC-WHY DO BALLS BOUNCE BACK?

-WHY DO SURFACES GIVES DIFFERENT HEIGHT ON THE BALL’S BOUNCE?

The significance of the study is to know more about balls, bouncing and

energy. It involves physics and it gives more information about

POTENTIAL ENERGY,KINETIC ENERGY and many more, it also give us more

ideas why ball games that need bouncing has different surfaces, such

as basketballs on cemented floors, ping-pong games on flat woods and

soccer games on grassland.

SIGNIFICANCE OF THE STUDY

In this kind of In this kind of investigation, we can investigation, we can

only use balls that only use balls that have the potential to have the potential to bounce. And for the bounce. And for the

surfaces, it should be a surfaces, it should be a surface that a ball can surface that a ball can bounce on. Sand and bounce on. Sand and Water are not allowed Water are not allowed

in this kind of in this kind of Investigatory Project.Investigatory Project.

Balls, these are spherical bodies. For kids, these are round or have a shape of circle,

mathematically speaking, Balls are the space inside a sphere, and it may be either a closed

ball or an open ball. Balls were created for games, so ball games were created. Different sports require different balls; the size and the materials in making a ball matter a great deal,

and a lot of scientific research goes into developing the right bounce for the right ball.

Bounce is the ability or skill of the ball.

Research Design

Materials Materials The materials we used for our The materials we used for our investigatory project are one (1) investigatory project are one (1)

tennis ball, meter stick and tennis ball, meter stick and surfaces which are the wood, floor surfaces which are the wood, floor

(cemented) and textbook.(cemented) and textbook.

WOOD floor textbook

Procedures Procedures

The first thing we did is to prepare all the

materials needed. After the preparation, we measured50 cm from the different surfaces up to the heightwhere We will drop the ball or release the ball.Afterwards, we prepared the ball to the height wherewe measured which is 50 cm away from the surfaceand then we dropped it to the different surfaces, the first surface was wood, then floor and lastly, textbook. After dropping the ball, we measured the height of bounce and then we dropped it again and again until 5 trials and then we identified which surface gives the ball to bounce higher throughthe measurements we have gathered.

PROCEDURAL DESIGNPROCEDURAL DESIGNPROCEDURES

Prepare all the materials

Measure the height where the ball will be drop or release.

Prepare the ball or hold the ball to the place where it will drop.

Determine which surface gives the ball to bounce higher

Measure the ball’s bounce, do this 5 times/5 trials

Gently drop the ball to different surfaces consecutively

PICTURES

Me and my partner, dropping and observing the ball

The ball’s bounce on the wood.

Ready to drop the ball

The ball with the book Ball that is placed on the floor

My partner, taking downrecords

TRIALS WOOD FLOOR TEXTBOOK

1st 27 cm 27 cm 22 cm

2nd 24 cm 28 cm 20 cm

3rd 22 cm 29.5 cm 23 cm

4th 28.5 cm 26 cm 21 cm

5th 27 cm 26 cm 22 cm

Lay- out Data in Tabular Form

Data GatheringData Gathering

The data we gathered matched our hypothesis which is the ball’s bounce will be affected, if you’ll drop it on different surfaces. Because in our observation, the height to which a ball will bounce depends on the height from where it will drop, what the ball is made of and what the surface it bounces from is made of.