2. GENERAL
TO 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?

3. SIGNIFICANCE OF THE STUDY
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, pingpong games on flat woods and soccer
games on grassland.

4. In this kind of
investigation, we can only
use balls that have the
potential to bounce. And
for the surfaces, it
should be a surface that
a ball can bounce on.
Sand and Water are not
allowed in this kind of
Investigatory Project.

5. 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.

6. Research Design
WOOD
floor
textbook
Materials
The materials we used for our
investigatory project are one (1) tennis
ball, meter stick and surfaces which are
the wood, floor (cemented) and
textbook.

7. Procedures
The first thing we did is to prepare all the
materials needed. After the preparation, we measured
50 cm from the different surfaces up to the height
where We will drop the ball or release the ball.
Afterwards, we prepared the ball to the height where
we measured which is 50 cm away from the surface
and 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 through
the measurements we have gathered.

8. PROCEDURAL DESIGN
PROCEDURES
Prepare all the
materials
Determine which surface
gives the ball to bounce
higher
Measure the height where
the ball will be drop or
release.
Measure the ball’s
bounce, do this 5
times/5 trials
Prepare the ball or hold the
ball to the place where it will
drop.
Gently drop the ball
to different
surfaces
consecutively

9. PICTURES
Me and my partner,
dropping and
observing the ball
The ball’s bounce on
the wood.
Ready to drop the
ball

10. The ball with the book
Ball that is placed on the
floor
My partner, taking down
records

11. Lay- out Data in Tabular Form
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

12. Data 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.