Success in Athletics and how to obtain it

SHOT-PUTTING 179. It then describes the parabola a b d, and finally lands at d. Assuming a 16-pound shot to be "put" 45 feet, the kinetic force exerted is about 361 foot-pounds . The velocity at the moment of departure is 38 feet per second, and the time taken to accomplish this range (r) is I ·7 seconds. As in jumping, javelin-throwing, etc., great care should be taken to study this angle of 45° 1 which will give the best results; also that the body and arm at the moment of delivery are in a practically straight line, as this will greatly reduce the strain produced at the final instant of the thrust. The body may possibly be leaning o-ver the circle at an angle at which it might appear impossible to maintain a balance (seen in figs. 70 and 71, and taken at the moment of delivery); but the balance is re– covered to a great extent by Newton's third law of motion-viz. "To every action there is an equal and opposite reaction "-and the force produced in deliver– ing the shot also produc.es a reaction which helps the body to recover. The primary actions gone through in the first stages of " putting" produce acceleration, which is trans– formed into velocity by the final muscle-effort.