The centre of gravity of a sprinter during the race lies (a)ahead of his feet (b)behind his feet (c)at the centre of the body (d)to the left side of the body
option a. Running is a way of terrestrial locomotion permitting human beings and different animals to transport hastily on foot. It is really described in athletics phrases as a gait wherein at normal factors throughout the walking cycle each ft are off the ground. This is in comparison to walking, in which one foot is constantly in touch with the ground, the legs are stored usually immediately and the middle of gravity vaults over the legs in an inverted pendulum fashion. A feature characteristic of a strolling frame from the point of view of spring-mass mechanics is that modifications in kinetic and capacity power inside a stride arise simultaneously, with power garage done through springy tendons and passive muscle elasticity.
