They say that F = ma, force is equal to mass times acceleration. That means that my fist hitting your face at a slow but accelerating rate rate of 20 miles per hour should hurt MORE than my fist going at your face at a steady and constant rate of 300 miles per hour. Because acceleration at a constant speed is 0, the force of that latter punch should be equal to the mass of my hand times 0, which we all know is 0, which means the punch would have 0 impact. Does that mean that if my fist were decelerating, it would have a negative force, somehow imploding and absorbing kinetic force power from your face? No! That doesn't make any sense!
Don't think I've forgotten about you, theoretical physicians. Riddle me this: Time is relative to gravity, yeah? Then how do we know that the universe is 4 billion years old? Huh?