Question

After a recent hail storm, a local weather man said that the "baseball-sized" hail stones would fall at 80 mph (assuming a diameter of 7.35 cm and roughness comparable to the of a golf ball, evaluate his claim. The density of ice may be taken to be 958 kg/m3. Assume the air through which the hail stone falls to be 15 C

please show all the equation you will use clearly

Answer 1