Does+ping+pong+ball

Title
Does the speed of a ping pong ball effect its trajectory?

Problem Scenario
Curius to see if object hits the scenario.

Broad Question
i want to learn how ping pong ball bounces.

Specific Question
ping pong ball.

Hypothesis
the ping pong ball will bounce higher in the shorter tube than the longer tubes because, there is more space to go between the tube and the table.

Independent Variable:
changing the height of tubes

Dependent Variable:
measuring height of bounce

Variables That Need To Be Controlled:

 * Vocabulary List That Needs Explanation **

= Controlled, manipulated experiment =

What is your experimental unit?
ping pong ball, tubes, height

Number Of Trials:
15-20

Number Of Subjects In Each trial:
ball 1 to each trial

Number of Observations:
15-20

When data will be collected
when i finish my wiki

Where will data be collected?:
first on paper then in my science notebook = Comparative Study  =

Number Of Comparison Categories:
height

Number of Comparison Samples:
15-20

Number Of Obser vation In Each Sample:
2

When data will be collected
when i finish my wiki

Where will data be collected?:
science notebook