What Effects the Bounce of a Dropped Ball

Topics: Harshad number, Green Line, Ruler Pages: 2 (254 words) Published: March 23, 2013
Aim
The aim of this experiment is to investigate the efficiency of a bouncing ball, and the factors which affect its efficiency.

Hypothesis
If I increase the height from which a ball is dropped, then the bounce height will increase because it will increase the speed and create a larger impact, causing the ball to bounce higher then dropping it from a lower height.

Materials
1.High bounce ball
2.Measuring tape
3.Tape
4.Wall

Risk Assessment
H- Cutting yourself with the measuring tape
C- Handle with care and ensure that it is locked

Method

1.Hold the measuring tape with the 0 centimeter end on the floor. Then tape the measuring tape to a wall.

2.Hold the bottom of the high bounce ball in place with the 100 centimeter mark on the measuring tape.

3.Drop the ball and determine the total bounce height of the ball, which would be the distance from the surface to the bottom of the ball at the top of its bounce.

4.Continue till you have data for 3 tests.

5. Repeat steps 2-5 for drop heights
80 cm
60 cm
40 cm

6. Average all the data.

Variables
Independent variable = drop height
Dependent variable = bounce height
Controlled variables = ball, surface, measuring tool

Data Table

Height a Ball Bounced From Different Drop Heights

DROP HEIGHT (CM) TEST
1TEST
2TEST
3AVERAGE
10050495150
8038394039
6031293030
4022202120

Graph
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