CoolColJ said:
Think about it, 4 feet just standing there. He would have to generate a ton of power to launch 235lbs up that high.
I thought CCJ maybe had a point here- so I ran some numbers- my physics skills might be rusty though
Given factors
235 lbs =106.6 kg; 4 ft = 1.2 meters, time=1 second (I guessed this as his time on the ground)
Velocity- Using the distance, gravity, and a time of 1 second on the ground, I got his initial velocity to be
16ft per second = 23.5 mph = 4.9 m/s
-sounds reasonable- though in the optimal human performance range
Force- Using his mass, times the velocity above, divided by his time on the ground (1 sec)
3760 ft*lbs/sec2 = 522.3 Newtons = 0.05-0.06 tons of force (depends if you use US or UK standards)
Power- Force*Velocity, both from above
60,160 ft2*lbs/sec3 = 2559.3 Watts =3.43 Horsepower
So here is my question- One- does this seem correct- or have my physics skill eroded too much these days? Two- do these numbers seem reasonable?
I don't think they are that unreasonable considering his 40 time
40 yards @ 4.3-4.4 seconds - for him to run that fast, he would have to AVERAGE a velocity of 19.0-18.6 mph (27.9-27.3 ft/s or 8.5-8.3 m/s) over the entire distance... thus he must be able to go faster and have extremely fast acceleration to attain that AVERAGE velocity.... Granted- this is vertical vs hoizontal displacement, but an initial velocity for the jump of about 23.5 mph might be reasonable- though a running or at least a step or two would make it MUCH easier...
Thoughts?