A 5-G Coin Is Dropped from a 300-M Building

Multiple Choice

A 5-g coin is dropped from a 300-m building. If it reaches a terminal velocity of 45 m/s, and the rest of the energy is converted to heating the coin, what is the change in temperature (in °C) of the coin? (The specific heat of copper is 387 J/kg⋅°C.)

A) 9
B) 2
C) 5
D) 21
E) 0.5