Asked by Andrea
                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)
            
        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)
Answers
                    Answered by
            bobpursley
            
    total momentum is conserved, b.   Energy is usually lost in heat and change in entropy.
    
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