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Others Like “What Goes Up, Must Come Down: Conduct Galileo's Famous Falling Objects Experiment”

Science Fair Project Idea
thumbnail Many sports use a ball in some way or another. We throw them, dribble them, hit them, kick them, and they always bounce back! What makes a ball so bouncy? In this experiment you can investigate the effect of air pressure on ball bouncing. Read more
Sports_p007
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
thumbnail Playing basketball can be hard work. Players not only constantly run around the court, but just dribbling the basketball takes a lot of effort, too. Why is that? It has to do with how the basketball bounces. When the ball hits the court, its bounce actually loses momentum by transferring some of its energy into a different form. This means that to keep the ball bouncing, players must continually put more energy into the ball. In this sports science project, you will determine how high a… Read more
Sports_p037
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available. See the Materials and Equipment list for details.
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
thumbnail "Hey kids, step right up! Toss this ball and win a prize!" shouts the carny barker. Sounds easy enough—until you try it. Why are those "simple" games at the fairs, carnivals, and boardwalks so hard? Is it really lack of skill or coordination or do those concessionaires use some basic laws of science to help them set up the games in their favor? This science fair project can help you find out for yourself. Read more
ApMech_p021
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Time Required Very Short (≤ 1 day)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety Minor injury possible
Science Fair Project Idea
thumbnail Practice makes you better at most things, and knowledge makes practice so much easier! Can you swirl a circular toy called a hula hoop around your waist or arm? Is it hard? What knowledge can you apply to find ways that make hula-hooping easier? Physics! Yes, physics will help you determine what makes one hula hoop a winner and another a flop. In this science project, you will create your own hula hoops, spin them, and draw conclusions. The road will then be open to your becoming a hula hoop… Read more
Phys_p088
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Time Required Short (2-5 days)
Prerequisites You should know how to (or be willing to learn to) hula hoop around your waist or arm. Note: Hula-hooping is fairly easy if you have the right hula hoop for your body. This science project provides guidelines to make such a hula hoop.
Material Availability Readily available.
Cost Very Low (under $20)
Safety Adult help is required to cut the polypipe tubing.
Science Fair Project Idea
thumbnail Have you ever noticed that when you drop a basketball, its bounce does not reach the height you dropped it from? Why is that? When a basketball bounces, such as on a basketball court, its bounce actually loses momentum by transferring energy elsewhere. This means that to dribble the basketball, players must continually replace the transferred energy by pushing down on the ball. But what happens to the "lost" energy? As we know from physics, energy is not really lost, it just changes form. One… Read more
Sports_p038
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Time Required Short (2-5 days)
Prerequisites Must be able to dribble a basketball 100 times in a row quickly.
Material Availability An infrared thermometer is required to do this science project. See the Materials and Equipment list for details on where to buy one.
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail In physics class, you have probably rolled your eyes at some point after being assigned a "projectile motion" homework problem where you use equations to predict how a ball will move through the air. This experiment will show you just how fun that problem can be by using a real catapult to launch a ball and videotaping it as it flies along its path. Then, you will analyze the video and compare it to what the equations predicted. If you have ever wondered if those equations in your physics… Read more
Phys_p089
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Time Required Average (6-10 days)
Prerequisites This project requires a basic understanding of algebra, trigonometry (sine and cosine functions), and physics (kinematics—two-dimensional projectile motion), or the willingness to learn about these subjects on your own.
Material Availability This project requires access to a video camera (not included in the cost estimate) and the purchase of a catapult kit. (See the Materials and Equipment list for details.)
Cost Average ($40 - $80)
Safety Minor injury possible. Never aim the catapult at anyone, and keep your hands and fingers clear of the moving catapult arm when launching the catapult.
Science Fair Project Idea
thumbnail Have you ever dropped something and wondered how fast it was moving while falling? If it was something fragile, like a cell phone, you might not have been thinking about this at the time — you may have been too busy trying to grab the phone! But you probably wanted to find out just how hard it hit the ground afterwards. We know that gravity forces an object to fall, but how does this affect how quickly something falls and how hard it hits the ground? For example, did the phone move faster… Read more
Phys_p026
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Low ($20 - $50)
Safety No issues
Science Fair Project Idea
thumbnail Have you ever seen a "Hail Mary" football pass, where the quarterback tries to throw the ball as far as possible to reach the end zone and score a touchdown? Or a last second game tying soccer goal from midfield? How far the ball will go does not just depend on how hard a player throws or kicks it; it also depends on the angle at which the player launches the ball. In this sports science project, you will investigate how launch angle affects the distance that a ball travels by filming… Read more
Sports_p036
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Time Required Average (6-10 days)
Prerequisites None
Material Availability This science project requires a computer with internet access and a digital video camera with a tripod. See the Materials and Equipment list for details.
Cost Low ($20 - $50)
Safety Be sure to do this science project in an open area like an empty football field, where you will not hit people or buildings with the ball.
Science Fair Project Idea
thumbnail You might think that plants and animals have little in common with batteries, springs, or slingshots, but they actually do have something in common. Both living and non-living things store and transfer energy from one form to another. In this physics science fair project, you'll investigate this energy storage and transfer, not in a plant or animal, but in bouncy balls. You'll find out if there are limits on how much energy can be stored and if there are losses when the energy is transferred. Read more
Phys_p071
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Time Required Short (2-5 days)
Prerequisites None
Material Availability Readily available
Cost Very Low (under $20)
Safety No issues
Science Fair Project Idea
thumbnail In baseball, coaches use hit charts to track the results of every hit each player makes, giving a measure of the player's performance. Have you ever wondered what things affect where a baseball goes when a player hits it with a bat? In this project you will set up an experiment to hit a ping pong ball in a controlled manner using a toy catapult, then learn about the physics of baseball by making your own hit chart. Read more
Sports_p060
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Time Required Average (6-10 days)
Prerequisites To do this project, you should understand what a coordinate system is and know how to make a simple scatter plot.
Material Availability This science project requires a kit available from the Science Buddies store. See the Materials and Equipment list for details. Estimated project time includes shipping.
Cost Average ($40 - $80)
Safety Never launch projectiles at people or animals. Be careful not to get your fingers caught in the moving parts of the catapult.
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