When a cat or any body falls over to the ground, how is momentum conserved?
I was working on a problem of a cat falling on top of a skateboard, and the system travels together with a new velocity. That seemed intuitive enough for me. This is how I was thinking through:
The cat had momentum that became zero after the impact. Should not the skateboard have recoiled in some way, due to the conservation of momentum? After all, the change in momentum for the board should have been something measurable.
I guess there is something wrong with the way I am approaching the problem. Could you please help me identify this?
EDIT: I apologise: but the situation is like this - a skateboard moves on the ground with constant speed, until the cat is dropped from a tree. The cat lands on the skateboard and then proceeds with a new speed.