Momentum is always conserved. The momentum is transferred to the Earth, making it spin faster. The speeding up of the car made the Earth spin slower, so the momentum is still constant.
@schnappy00 The system is the car and the tree, so the momentum is not conserved for the system. It's just a point of reference sort of thing. Momentum is conserved in this universe, but that is all. The abstraction of the system allows for momentum to not be conserved.
No momentum is only conserved in the absence of an external force.
rinwhr 2 months ago
You teach very well I find your videos great for my physics review test! thanks alot!
TheRidas11 11 months ago
thank you for sharing this helpful clip
asalad083 1 year ago
I think he got it wrong, the momentum of ANY collision is conserved, but the Kinetic energy isn't.
The tree and car is an example of an inelastic collision, the momentum is conserved, but the kinetic energy isn't.
Taowhr 1 year ago
nice
HjalmarGuitarMaster 1 year ago
Momentum is always conserved. The momentum is transferred to the Earth, making it spin faster. The speeding up of the car made the Earth spin slower, so the momentum is still constant.
The car + the tree are not an isolated system.
schnappy00 2 years ago 6
@schnappy00 The system is the car and the tree, so the momentum is not conserved for the system. It's just a point of reference sort of thing. Momentum is conserved in this universe, but that is all. The abstraction of the system allows for momentum to not be conserved.
LoboLoco8908 1 year ago 3
wich coll do u teach for? and wat class i mean which standard 11 or 12
jeet987 2 years ago
very nice thanx
xxxcoolboyxxx 2 years ago 2
this is a good review for test
zipobob1 2 years ago 7