1 / 11

Conservation of Momentum

The Law of. Conservation of Momentum. Momentum before interaction = Momentum after interaction. Momentum Rocket = Momentum Exhaust A huge 20-kg rocket zooms upward at 5 meter/second. At the same exact time, 10-kg of water shoots downward. How fast does the water shoot out?.

teige
Télécharger la présentation

Conservation of Momentum

An Image/Link below is provided (as is) to download presentation 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. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Law of Conservation of Momentum Momentum before interaction = Momentum after interaction

  2. Momentum Rocket = Momentum Exhaust A huge 20-kg rocket zooms upward at 5 meter/second. At the same exact time, 10-kg of water shoots downward. How fast does the water shoot out?

  3. Momentum Rocket = Momentum Exhaust mv = mv 20 x 5 = 10 x ??? 100 = 10 x ???

  4. Momentum Rocket = Momentum Exhaust mv = mv 20 x 5 = 10 x ??? 100 = 10 x 10 m/s

  5. A toy 10-kg fire truck is rolling at 10 m/s when it hits a parked 5-kg toy car… mv 10 x 10 mv 5 x 0

  6. After the collision, the car rolls at 4 m/s. What is the velocity of the fire truck? mv 5 x 4 mv 10 x ?

  7. mv =mv + mv 10 x 10 = 10v + (5 x 4) 100 = 10v + 20 -20-20 80= 10v10 10 v = 8 m/s

  8. A blue 10- kg box car rolls at 6 m/s and crashes into a 20-kg box car that is at rest. 6 m/s 0 m/s 10 kg 20 kg

  9. A blue 10- kg box car rolls at 6 m/s and crashes into a 20-kg box car that is at rest. 6 m/s 0 m/s 10 kg 20 kg After the crash, both cars are stuck together. What is their velocity? ? m/s 10 kg 20 kg

  10. After the crash, both cars are stuck together. What is their velocity? ? m/s 10 kg 20 kg mv + mv = mv (10x6) + (20x0) = 30V 60 = 30V V= 2 m/s

  11. Law ofIndependence of Motion:Gravity doesn’t care if an object is moving horizontally or vertically, it will still cause it to fall at 9.8 m/s2.For example, if I threw a rock off of a cliff and my friend just dropped another rock at the same time, both rocks would hit the water at the same time (one would just land farther away from the cliff).

More Related