Hail is generated within a thunderstorm. As the thunderstorm becomes more severe the size of the hail may increase.
Descriptor
Diameter
pea
0.25 inches
penny
0.75
quarter
1.00
half dollar
1.25
golfball
1.75
tennis ball
2.50
baseball
2.75
grapefruit
4.00
volume of spherical hail =
= 4/3 * PI() * ((radius)/3)
weight in grams =
= (volume) * (density) = (volume * 0.9168
Although hail may fall at a speed determined by its terminal velocity, in a severe thunderstorm it may be driven at high speed by the winds.
kinetic energy in joules =
= 0.5 * (mass in kg) * ((velocity in m/s)^2)
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Specialty: Emergency Medicine
