Group Work. A hockey puck of mass 0.25 kg slides eastward across the ice at 25 m/s . What is its momentum p 1 (magnitude and direction)?
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
actually stems from conservation of momentum
If a 0.25-g insect collides with a 1250-kg compact car, which experiences the greatest (magnitude of) force in the collision?
Your educated mule argues that there is no point in pulling a cart, because the cart will pull back on him as hard as he pulls on it. What should you tell him?
All forces are interaction forces!
If a 0.25-g insect collides with a 1250-kg compact car, which experiences the greatest (magnitude of) impulse in the collision?
Dp1 + Dp2 = 0
Dp1 = –Dp2
Hint: When force F1 is applied to the first object for time Dt, what is its momentum change? What happens to the second object during this time?
When a bug hits a car windshield, whose momentum changes the most? (Assume there are no external forces.)
The total momentum of an isolated system never changes.
Hint: What is their momentum after the collision?
Stick and puck have opposite momentum changes.
Work and Energy
Work and energy are scalars
Kinetic and potential energy