Xisaabi masaafada garaacida
Masaafada garaacida waxay ku xiran tahay xawaaraha kulubka iyo smash factor. Xawaaraha kubadda = xawaaraha kulubka ร smash factor.
Xawaaraha kulubka iyo kubadda
Celceliska amateuryada waa 85-95 mph, xirfadleydu waa 110-125 mph.
Smash factor
Smash factor-ka ugu fiican driver-ka waa qiyaastii 1.50.