# Hardness of Tennis Balls and Distance Traveled

Hard
Let's explore the correlation between the hardness of a tennis ball and the distance it can travel. We'll drop the balls from a height of one meter and measure the number of times it bounces. Then, we'll launch the balls from a launcher and measure the distance traveled.

## Hypothesis

The hypothesis is that softer balls will be bouncier and thus, be able to travel longer distances as compared to harder balls.

## Method & Materials

You will drop the balls from a height of one meter and count the number of times it bounces. Then, you will launch the balls from a launcher and measure the distance traveled.
You will need 3 different brands of tennis balls, each with a different degree of hardness, a tennis ball launcher, a measuring tape, a 1 meter long ruler, a large open field, an assistant to help with measurements, and a permanent marker pen.

## Results

The results show that the soft bouncier balls are able to travel further compared to the hard and less bouncy balls. This proves that the hypothesis is true. The manufacturers of sports gear use different methodologies when producing their balls, which gives sports enthusiasts the opportunity to choose the ball that best enhances their performance.

## Why do this project?

This science project is interesting because it explores the correlation between the hardness of a tennis ball and the distance it can travel. It also shows how different manufacturers use different methodologies when producing their balls.

## Also Consider

Try to repeat the experiment under different temperature conditions. Also, the experiment can be done on a concrete floor instead of in a field.

## Full project details

You can find additional information and details for this science fair project here. Have fun exploring!