divide both sides of the equation by mass, it divides out.

mass*HeatFusion=mass*gh

How do you calculate the height that a block of ice at 0°C must be dropped to completely melt upon impact. Assume that all of the initial gravitational potential energy of the block goes into melting the ice.

ENergy to melt: mass*HeatofFusion
energ from falling: mass*g*h
set them equal, and solve for height h.

Watch your units.

Yeah, but we are not given mass. And it says that it is not needed. This is what totally throws me off. I don't see how I can solve without having mass.

Allie,you should rewrite the problem at the top so he can see it because I don't think he goes down again.LOL!Also,do you go to Gateway?Becuase I think I know you!

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