Nerd-A-Pult #2 – Another Projectile Motion Problem (10:30)
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.
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
Previous Projectile Motion Problem:
Nerd-A-Pult - An Introductory Projectile Motion Problem