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Nov 17, 2020 at 13:59 comment added cavalist Thanks! I realized. The cart is not fixed to ground so can get energy from air not liķe stationary wall.
Nov 17, 2020 at 13:56 vote accept cavalist
Nov 17, 2020 at 16:10
Nov 17, 2020 at 13:55 comment added Anonymous Hope it helps you
Nov 17, 2020 at 13:54 comment added Anonymous because on rebounding the air looses energy and its outlet speed reduces because of loss of energy. Now if you apply conservation of momentum then you will find your cart moving.
Nov 17, 2020 at 13:52 comment added cavalist In experiment, cart move left. I know there is loss. Then why move left?
Nov 17, 2020 at 13:40 comment added Anonymous otherwise like in real life it is not
Nov 17, 2020 at 13:39 comment added Anonymous it will depend, if you take it ideal like no energy loss then the momentum will remain conserved
Nov 17, 2020 at 13:38 comment added cavalist What causes difference in momentum in real life experiment?
Nov 17, 2020 at 10:00 history edited Anonymous CC BY-SA 4.0
added 95 characters in body
Nov 17, 2020 at 9:52 history answered Anonymous CC BY-SA 4.0