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Projectile Motion

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Shelby Stevens

on 11 March 2014

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Transcript of Projectile Motion

Sports Continued
When the ball leaves the punter's foot, it is moving with a given velocity depending upon the force with which he kicks the ball.
The ball moves in two directions, horizontally and vertically. Because the ball was launched at an angle, the velocity is divided into into two pieces:
A horizontal component
A vertical component
What is Projectile Motion?
Projectile Motion can be defined as a curved path (parabola) an object follows when thrown or propelled near the surface of the earth.
An object thrown vertically upward is a projectile, and upward at an angle horizontally is also a Projectile.
History of Projectile Motion
Aristotle believed the rate at an object falls is directly related to its mass.
In the late 1500s Galileo questioned his ideas and accurately described Projectile Motion.
Galileo discovered to divide motion into separate components of constant forward velocity and the downward acceleration of a free fall.
The path of any object that is launched or thrown ( football, arrow, ballistic missile) and is called Projectile Motion.
Lets examine a punt. When a punter kicks a football, he can control three factors:
The velocity or speed at which the ball leaves his foot
The angle of the kick
The rotation of the football
Real Life Examples
Football thrown towards a receiver is a example of projectile motion.
Projectile vomiting
Jump rope
What does sports have to do with Projectile Motion?

Lets think about football for a few seconds. When a football is thrown in the air it follows a curved path called a parabola.
The movement of the ball in the vertical direction is influenced by the force of gravity.
As the ball travels up, gravity slows it down briefly at its peak height. The ball then comes down and gravity accelerates it until it hits the ground.
Projectile Motion
by: Shelby Stevens & Whitney Pennington

Sports Continued
Full transcript