Recently my college coach asked me to calculate this for him and I figure it could help the coaches out there get their hitters ready for game day. Enjoy!
MPH Equivalency Chart
Assumptions: A pitcher
throws off a mound that is 60.5 feet away from home plate, but after the
pitchers stride the ball is released at 55 feet. Therefore, the “equivalency”
section is the MPH when the time of a ball thrown from 55 feet crosses the
plate and the time a pitch from the “controlled distance” is the same.
MPH = Miles/Hours
MPH = (x/5280)/(y/3600)
x=Feet y= Seconds
|
MPH
|
Distance
|
Equivalency
|
|
69 mph
|
40 feet
|
95 mph
|
|
68 mph
|
40 feet
|
93.5 mph
|
|
67 mph
|
40 feet
|
92.1 mph
|
|
66 mph
|
40 feet
|
90.8 mph
|
|
65.45 mph
|
40 feet
|
90 mph
|
|
65 mph
|
40 feet
|
89.4 mph
|
|
64 mph
|
40 feet
|
88 mph
|
|
63 mph
|
40 feet
|
86.8 mph
|
|
62 mph
|
40 feet
|
85.3 mph
|
·
The equivalency mph from 55 feet increases by
about 1.55 mph for every one mph increase from a throw from 35 feet.
Equivalency mph is rounded off to the nearest tenth.
|
MPH
|
Distance
|
Equivalency
|
|
61 mph
|
35 feet
|
95.9 mph
|
|
60 mph
|
35 feet
|
94.3 mph
|
|
59 mph
|
35 feet
|
92.7 mph
|
|
58 mph
|
35 feet
|
91.2 mph
|
|
57.27 mph
|
35 feet
|
90 mph
|
|
57 mph
|
35 feet
|
89.6 mph
|
|
56 mph
|
35 feet
|
88 mph
|
|
55 mph
|
35 feet
|
86.5 mph
|
|
54 mph
|
35 feet
|
84.9 mph
|
·
The equivalency mph from 55 feet increases by
about 1.4 for every one mph increase from a throw from 35 feet. Equivalency mph
is rounded off to the nearest tenth.
Between 54-69 MPH on average moving back 5 feet makes a 12.1
mph difference
The range is from 10.7 mph to 13.4
mph, the difference increasing by .155 for every one mph harder
*Any error is due to round off
-Blake Dale Lepire
No comments:
Post a Comment