Question

A lump of lead with mass 0.5kg is dropped from height of 20m onto a hard surface it doesn't rebound but remains there at rest for a long period of time. A, find change in heat , change in work, change in internal energy for the lead during this process?

Answer 1

gpe converted into heat: mass*g*height

all that energy changes to heat (internal energy). It came from the work gravity did.

Answer 2

∆Q,∆W&∆U?