Question

A 3.35g lead bullet at 31.0°C is fired at a speed of 255 m/s into a large block of ice at 0°C, in which it embeds itself. What quantity of ice melts?

Answer 1

Ke = (1/2) m v^2 = .5*.00335 * 255^2
in Joules

= mass * heat of fusion of water

= 3.35 * 333 J/gram