Question

An iron nail is driven into a block of ice by a single blow of a hammer. The hammerhead has a mass of 0.7 kg and an initial speed of 3.1 m/s. Nail and hammer are at rest after the blow.

How much ice melts? Assume the tempera- ture of both the ice and the nail is 0◦C before and after. The heat of fusion of ice is 80 cal/g.

Answer in units of g.

Answer 1