![]() Why do you think it's important to perform the same test at least a few times? Try to consistently throw the ball as hard as you can, so its initial speed is constant. Repeat the throw at that angle two more times.Have your helper mark where the ball lands (for example, with a rock).Can you think of a time this type of throw would be best? If you are familiar with measuring angles in degrees, imagine trying to throw the ball at about a 15-degree angle relative to the ground. Throw your ball as hard as you can, relatively straight forward at a "shallow" angle-as parallel to the ground as you can.What type of angle do you think will get the farthest distance-shallow, steep or medium?.(If it is a windy day, make sure you pick a consistent direction relative to the wind.) Mark a place on the ground so you know to always throw the ball from that location. Pick a place to stand in your large, open area.Do some stretching or warm-up exercises before you start the experiment-it will involve a lot of throwing!.Make sure you have a large, open area to throw, and that there are no other people or objects in the way.Three each of three different objects to mark where the ball lands on the ground (for example, three sticks, three rocks and three golf balls).Sports ball of your choice (baseball, tennis ball, football, etcetera).What angle do you think will make the ball go the farthest? ![]() In this experiment you will throw a ball as hard as you can while changing the ball's initial angle relative to the ground. Adjusting the ball’s initial angle and keeping its initial speed constant is one way to find out the best angle to throw a ball as far as possible. (You can do an Internet search for "parabola" to see what one looks like.) The path the ball follows (called its trajectory) will determine how far it goes before it hits the ground. When air resistance is very low, a projectile moves in the shape of a parabola-a type of mathematical curve. It is also subject to the force of air resistance, which slows the projectile down. When a projectile is moving through the air, however, it is subject to the force of gravity, which causes it to move down toward Earth. When a projectile is launched, it has an initial velocity (its speed and direction of motion). The study of how projectiles move through the air is called projectile motion. ![]() Should you make a shallow throw (straight out, parallel to the ground), a steep throw (throwing the ball high up in the air) or something in between? Try this sports science project to find out!Īn object that is thrown, kicked or otherwise launched through the air is called a projectile. The angle can affect just how far a throw or a kick can carry a ball. There is some science behind these throws and kicks. Have you ever seen a long, game-winning pass in a football game, a baseball player throw in a ball from way out in the outfield or a soccer goalie punt a ball all the way down the field? All of these actions involve a player trying to throw or kick a ball as far as possible. ![]()
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