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Bio 226 Rebound of a Rubber Ball Practice Material
- Course
- BIO 226
- Institution
- Marian University
Bouncing Ball Lab (1) - Physics on rebound of a rubber ball. The elasticity of several ball and the
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Name: _____________________ Class: ___ Date; __________________Bouncing Ball Efficiency
Learner Outcomes:
-To practice the calculation of and the factors that affect
efficiency.
Key Terms:
Efficiency Input Output
Background Information:
The purpose of using a mechanical device is to make our lives easier. That means,
we want a device that is more efficient. In other words, we want a device that
gives us more output work or motion relative to the energy we put into it.
Research Question: How energy-efficient are various types of balls when bounced
off a hard floor?
Materials:
Variety of bouncy balls Ruler
Procedure:
1. Hold a metre stick upright against the floor. Hold one of the balls above the
floor so that the bottom of the ball is exactly 100cm above the floor. Drop
the ball. Have your partner observe the height to which the bottom of the
ball bounces on the first bounce. This is called the ball’s rebound height.
Record the measurement on your lab sheet.
2. Drop that same ball 2 more times and calculate the average rebound height
by adding all 3 measurements and divide by 3. Record the average in your
table.
(Height 1 + Height 2 + Height 3)
Average Rebound Height = ------------------------------
3
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