Success in Athletics and how to obtain it

THE STANDING LONG-JUMP 71 It will be readily realised that when the body is moved from a stationary position it must pass through a certain height to reach a certain distance, and there– fore the athlete must practise to attain this elevation as well as distance. Diagram rz represents the imaginary path passed through in the air by a man making a standing jump from the point A to B. Let us assume in the first instance, mainly for the sake of example, that the distance covered is ro feet. Now, at the moment of jumping, when the body is projected in the air from the point.A, it is virtually performing the same action Diagram 12. as a cannon ball would if fired out of a gun, and the path through which it passes is its "trajectory" and the distance covered is its "range." Under these circumstances let us consider it not as a human body, but as a particle. The first point to be considered is the " correct angle of projection "; and it must be here accepted, that according to all the laws of dyna– mics, the greatest range is obtained by projecting at an angle of 45°. From this the particle describes a parabola with a given -velocity, and this velocity naturally depends upon the amount of force applied. Now, the particle in passing through its trajectory attains its greatest height at a point exactly half way in -its range. It is this height which it is of the utmost