# Nerd-A-Pult #2 - Another Projectile Motion Problem

By Flipping Physics, 06/03/2014

- 1,486 views
- 1 comment

This time in our projectile motion problem, we know the displacement in the y-direciton and we are solving for the displacement in the x-direciton. We could you use the quadratic formula and I even show you how, however, I also show you the way I recommend doing it which avoids the quadratic formula.

Content Times:

0:14 Reading the problem

0:55 Comparing the previous projectile motion problem to the current one

1:16 Breaking the initial velocity in to its components

1:44 Listing the givens

2:27 Beginning to solve the problem in the y-direction

3:08 The Quadratic Formula!

5:49 How to solve it without using the quadratic formula. Solve for Velocity Final in the y-direction first

6:59 And then solve for the change in time

8:12 Solving for the displacement in the x-direction

9:01 Showing that it works

9:43 The Review

Want [url="http://www.flippingphysics.com/another-projectile-motion.html"]Lecture Notes[/url]?

Next Video: Understanding the [url="http://www.flippingphysics.com/range-equation.html"]Range Equation[/url] of Projectile Motion

Previous Projectile Motion Problem: [url="http://www.flippingphysics.com/nerd-a-pult.html"]Nerd-A-Pult[/url] - An Introductory Projectile Motion Problem

Want a Nerd-A-Pult? You can purchase one at: [url="http://marshmallowcatapults.com"]http://marshmallowcatapults.com[/url]

[url="http://www.flippingphysics.com/give.html"]1¢/minute[/url]

Content Times:

0:14 Reading the problem

0:55 Comparing the previous projectile motion problem to the current one

1:16 Breaking the initial velocity in to its components

1:44 Listing the givens

2:27 Beginning to solve the problem in the y-direction

3:08 The Quadratic Formula!

5:49 How to solve it without using the quadratic formula. Solve for Velocity Final in the y-direction first

6:59 And then solve for the change in time

8:12 Solving for the displacement in the x-direction

9:01 Showing that it works

9:43 The Review

Want [url="http://www.flippingphysics.com/another-projectile-motion.html"]Lecture Notes[/url]?

Next Video: Understanding the [url="http://www.flippingphysics.com/range-equation.html"]Range Equation[/url] of Projectile Motion

Previous Projectile Motion Problem: [url="http://www.flippingphysics.com/nerd-a-pult.html"]Nerd-A-Pult[/url] - An Introductory Projectile Motion Problem

Want a Nerd-A-Pult? You can purchase one at: [url="http://marshmallowcatapults.com"]http://marshmallowcatapults.com[/url]

[url="http://www.flippingphysics.com/give.html"]1¢/minute[/url]