# Physics

two objects collide when sliding on a fricitonless horizontal surface. Which quantity is conserved during their collision?
a) velocity
b) momentum of both objects
c)energy
d) momentum of each object

isn't c) or b) correct? I really think it's c)

1. 👍
2. 👎
3. 👁
1. total momentum is conserved, b. Energy is usually lost in heat and change in entropy.

1. 👍
2. 👎
👤
bobpursley

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