Re: Double Your Momentum, Reflection


W. Watson wrote:
> Intuitively it make sense that if a ball bounces off a brick wall that the
> momentum will be twice that of the ball as it speeds towards the wall;
> however, is there a way to demonstrate this with the laws of conservation of
> energy or some other similar means?
> --

Initially, ball has momentum +P and wall has momentum 0.
Finally, ball has momentum -P and wall has momentum +2P.
Total momentum is conserved (+P in both cases).

PD

.

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