Kinesiology 2241A/B Lecture Notes - Lecture 8: Airbag, Medicine Ball
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7 Oct 2016
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The amount of force delivered with respect to time. = force x time of force application. Can either be completely in x direction, or completely in z direction. Large force with little amount of time = the same as a small force over a long period of time. Measure of the quantity and direction of motion. Measure of a body"s persistence in its state of motion. A lot of mass + a lot of velocity = a lot of momentum. A lot of mass + little velocity = same as small mass with a lot of velocity. Impulse: amount of force applied x change in time, measured in newton seconds (ns) Momentum: amount of mass x change in velocity, measured in kg m/s. The only way to change an objects momentum is by delivering an impulse. Landing from a jump or catching a ball require limb flexion to cushion impact.
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