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A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.) This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:11 Prom Dress Day! 0:20 The three demonstrations 0:32 The problem 1:43 The equation for Impulse and Impact Force 2:02 Understanding the two parts to the demonstrations 3:33 Part (a): Impulse [water and soil] 4:47 Part (a): Impulse [wood] 5:23 Part (b): Impact Force [water and soil] 6:27 Part (b): Impact Force [wood] 7:59 The Ann Arbor Prom Dress Project Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25." Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them! Multilingual? Please help translate Flipping Physics videos! Previous Video: Using Impulse to Calculate Initial Height Please support me on Patreon! Thank you to my Quality Control help: Scott Carter and Jennifer Larsen

Name: Impulse Comparison of Three Different Demonstrations Category: Momentum and Collisions Date Added: 2017-02-09 Submitter: Flipping Physics A racquetball is dropped on to three different substances from the same height above each: water, soil, and wood. Rank the _______ during the collision with each substance in order from least to most. (a) Impulse. (b) Average Force of Impact. (Assume the racquetball stops during the collision with the water and soil.) This is an AP Physics 1 Topic. Want Lecture Notes? Content Times: 0:11 Prom Dress Day! 0:20 The three demonstrations 0:32 The problem 1:43 The equation for Impulse and Impact Force 2:02 Understanding the two parts to the demonstrations 3:33 Part (a): Impulse [water and soil] 4:47 Part (a): Impulse [wood] 5:23 Part (b): Impact Force [water and soil] 6:27 Part (b): Impact Force [wood] 7:59 The Ann Arbor Prom Dress Project Thank you to Jan Wery and Judi Lintott of the Ann Arbor Prom Dress Project: “Find your dream dress for less than $25." Next Video: Review of Mechanical Energy and Momentum Equations and When To Use Them! Multilingual? Please help translate Flipping Physics videos! Previous Video: Using Impulse to Calculate Initial Height Please support me on Patreon! Thank you to my Quality Control help: Scott Carter and Jennifer Larsen Impulse Comparison of Three Different Demonstrations

We all do like 50 times a day. But did you know that there is physics in that? Probably. But I'll talk about it anyways. So when you go to open a door, there is a force at some angle theta. So, if you break that into its components, you have a horizontal towards you and a vertical force down. But only the horizontal force is acting to open the door. With that force, we can find the torque (T = Fdsin(theta)), the rotation of the door as it swings open. We can also find the angular velocity using w = d(theta)/dt. Just remember when someone opens the door for you, to be polite and say thank you. That's all on the physics of opening a door. Tune in next time on the world of physics.