Download presentation

Presentation is loading. Please wait.

1
**Physics of Projectile Motion**

Exploding fireworks follow a parabolic trajectory.

2
**What’s wrong with this picture ?**

Answer: It never happens ! Only when there is no gravity.

3
**Why do projectiles fly in a parabola?**

4
**A History of Projectile Motion**

Aristotle: The canon ball travels in a straight line until it lost its ‘impetus’. Galileo: - a result of Free Fall Motion along y-yaxis and Uniform Motion along x-axis.

5
**Projectile Motion = Sum of 2 Independent Motions**

1. Along x, the projectile travels with constant velocity. vx=vxo x = vxot Along y, the projectile travels in free-fall fashion. vy = vyo – gt y = vyot – (1/2) gt2 , g= 9.8 m/s2 Projectile motion = a combination of uniform motion along x and uniformly accelerated motion (free fall) along y.

6
**What’s the similarity between a freely-falling ball and a projectile ?**

uniform motion Projectile motion vertical motion x A dropped ball falls in the same time as a ball shot horizontally. Along the vertical, their motions are identical (uniformly accelerated motion (free-fall). Along the horizontal, notice the ball fired horizontally covers the Same distance in the same unit time intervals (uniform motion along x)

7
**v vy vx Velocity Components at various points of the Trajectory **

vertical component vy v Net velocity vx Horizonal component Above: Vectors are added in geometric Fashion. Launch speed = Return Speed. Speed is minimum at apex of parabolic trajectory.

8
**At what angle do I launch for Maximum Range ?**

Need to stay in air for the longest time, and with the fastest horizontal velocity component Answer: 45°

9
**Everyday Examples of Projectile Motion**

Baseball being thrown Water fountains Fireworks Displays Soccer ball being kicked Ballistics Testing

Similar presentations

© 2020 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google