Jumping Distance

Abstract

Objective

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Introduction

The long jump was one of the events of the original Olympics in Ancient Greece. The athletes carried a weight in each hand, called a haltere. These weights would be swung forward as the athlete jumped to increase momentum, and then thrown backwards whilst in mid-air so as to propel himself further forward (Wikipedia Contributors, 2006).

Here is an illustration of ancient Greek Olympians using halteres to increase their distance on the standing long jump. (illustration by Patricia J. Wynne, American Musem of Natural History)

So how can you improve your long jump? The most important things to think about in the long jump are your approach, your takeoff, your flight, and your landing. The key to being successful at the long jump is to have a good technique at each stage of the jump. A strong approach will lead to a better takeoff, which will lead to a better flight and a longer jump (KidzWorld, 2006).

In this experiment, you will test how momentum can help you jump farther. Since it is tough these days to find ancient Greek halteres at your local sporting goods store, we will use running distance to increase momentum. Will running a longer distance before the jump make you jump farther?

Terms and Concepts

• Long jump
• Ancient Greece
• Halteres
• Momentum
• Distance in meters

Questions

• How far can you get in the long jump?
• Can using your momentum help you jump farther?
• Will running before the jump make you jump farther?

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Materials and Equipment

• A long jump pit (try a local park or high school track)
• Tape measure (preferably metric)
• Sidewalk chalk
• Good running shoes
• An assistant to help mark your jump

Experimental Procedure

1. For this experiment you will need to find a long jump pit. Most high schools will have one on the track field. Look for a running track that ends in a pit of sand.
2. First, measure out different running distances on the track and mark them off with your sidewalk chalk. Measure each distance from the bar at the edge of the pit. Try using these distances: zero, 3, 6, 9, and 12 meters.
3. Make a data table for your results. You should include space for three trial jumps at each starting distance you have measured. Here is an example:

4. Now try running and jumping from your different starting points. Have someone help you to mark where your feet land (not your bottom) when you jump into the pit.
5. After you jump into the pit, mark off and measure the distance of your jump and write the data in your data table.
6. Keep jumping! The more jumps you do, the more data you will have! Maybe even have your friend repeat the experiment.
7. Make a line graph of your results. On the left side of the graph (Y-axis) put the distance of the jump in meters. On the bottom of the graph (X-axis) put the starting distances that you measured and marked off with chalk. Now mark a dot where your data values (average jump length and starting length) intersect and connect the dots with a line.
8. Analyze your graph. Does the line increase (slope upwards) or decrease (slope downwards)? What do you think this means about your results? How did increasing the running distance affect your jumping distance?

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Variations

• Try making your own halteres with 1 gallon milk jugs. Fill the jugs with different volumes of water and then use them for a standing long jump. Do they improve your jumping distance? Which weight works the best?
• Does height affect jumping distance? Find volunteers of different heights and have them do the long jump. Will tall people jump farther than short people?
• Does speed affect jumping distance? Have volunteers do the long jump (to measure the jumping distance) AND time them running a sprint (to measure their running speed). Do people who run faster also have better jumping distances?

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Related Links

• Science Fair Project Guide
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• Sports Science Project Ideas
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