Projectile Motion What to Know Before you throw!.

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Presentation transcript:

Projectile Motion What to Know Before you throw!

What is it? Projectile motion is the curved path an object follows when it is thrown or pushed near Earth’s surface

Some examples... This arched path happens when you Kick a soccer ball Throw a baseball Take a long jump Shoot a basketball See a water fountain Dive into water Watch fireworks

Why does it do that? There are TWO motions at work * A push that moves the object forward. This horizontal motion comes from a force * A pull from gravity brings the object down to earth. This is a vertical motion.

Put it all together Combine the forward motion and the falling motion and you get an arc!

The Tricky Question So, let’s say you are standing on the roof of a building and have two bullets. You shoot one from a gun and drop the other one from the same height. Which bullet lands first?

The Answer Most people say the bullet shot from the gun lands first, but who was their science teacher? The bullet from the gun is going forward faster BUT since you know all things fall at the same rate (9.8 m/s/s) they hit the ground AT THE SAME TIME!

One More Time An object is controlled by two independant motions. So an object projected horizontally will reach the ground in the same time as an object dropped vertically. No matter how large the horizontal velocity is, the downward pull of gravity is always the same. quest.org/2779/ More.html