Asked by Bella

A 20 kg shopping cart moving at a velocity of 0.5 m/s collides with a store wall and stops. The momentum of the shopping cart

decreases?
Answered by drwls
yes; the momentum becomes zero. That is a reduction
Answered by Bella
what would it mean if i say
the momentum is conserved?
Answered by drwls
It is irrelevant to the question. The momentum of the cart is not conserved, because a force of impact is applied to it. The momentum of the cart PLUS wall is also not conserved, because of stress forces applied at the base of the wall.
Answered by Bella
ok, i was just wondering since that was one of my choices


thanks
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