Kinesiology 2241A/B Lecture 16: Lecture 16

• School: Western University
• Department: Kinesiology
• Course: Kinesiology 2241A/B
• Professor: Bob Vigars

Document Summary

Measure of the quantity and direction of the motion of a body. Measure of a body"s persistence in its state of motion. Greater f or longer t = greater change in m. Landing from a jump or catching a ball require limb flexion to cushion impact. Gradual stop --> m = force x time. Sudden stop --> m = force x time. Grf in downhill running more than uphill. Grf in high and low impact aerobics. Change direction: ft new ft in a different direction required quickest change = large f for small t less massive person = change easier. Ft and acceleration: acceleration can only occur if f-motive is greater than f-resistive longer t of motive f application = mmm preparation phase in jump, throw, strike = increase t of force application during the execution phase. For shock absorption, spread the force over a long period of time.