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The Amazing Race clip of a contestant getting hit in the face by a watermelon... real or faked?

Name: Watermelon to the Face Category: Momentum and Collisions Date Added: 2015-08-11 Submitter: FizziksGuy The Amazing Race clip of a contestant getting hit in the face by a watermelon... real or faked? Watermelon to the Face

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]

We need to know the initial velocity of a projectile leaving the Nerd-A-Pult. That means we need the initial speed and the initial angle. This video shows exactly how I measured both. Content Times: 0:30 Taking measurements to determine the launch angle 1:20 Finding a triangle 2:02 Defining the angles 3:35 Determining the launch angle 4:38 Using the frame rate to find the change in time 5:08 Measuring the distance travelled during the first frame 6:12 Why initial speed and not initial velocity? 6:39 Determining the average launch speed [url="http://www.flippingphysics.com/measuring-vi.html"]Want Lecture Notes?[/url] Next Video: [url="http://www.flippingphysics.com/another-projectile-motion.html"]Nerd-A-Pult #2[/url] - Another Projectile Motion Problem Previous Problem: [url="http://www.flippingphysics.com/nerd-a-pult.html"]Nerd-A-Pult - An Introductory Projectile Motion Problem[/url] Want a Nerd-A-Pult? You can purchase one at [url="http://marshmallowcatapults.com"]marshmallowcatapults.com[/url] [url="http://www.flippingphysics.com/give.html"]1¢/minute[/url]

Name: Nerd-A-Pult #2 - Another Projectile Motion Problem Category: Kinematics Date Added: 03 June 2014 - 12:29 PM Submitter: Flipping Physics Short Description: None Provided 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 View Video

Name: Nerd-A-Pult - Measuring Initial Velocity Category: Kinematics Date Added: 27 May 2014 - 09:29 PM Submitter: Flipping Physics Short Description: None Provided We need to know the initial velocity of a projectile leaving the Nerd-A-Pult. That means we need the initial speed and the initial angle. This video shows exactly how I measured both. Content Times: 0:30 Taking measurements to determine the launch angle 1:20 Finding a triangle 2:02 Defining the angles 3:35 Determining the launch angle 4:38 Using the frame rate to find the change in time 5:08 Measuring the distance travelled during the first frame 6:12 Why initial speed and not initial velocity? 6:39 Determining the average launch speed View Video