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Dynamics (Equations (Ek = 1/2 m v², SD = TD + BD, Work Done = Force x…
Dynamics
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Motion of a parachutist
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He will get within 1% of his terminal velocity within 15 seconds, the resultant force acting on him will be close to zero, and he will be moving at basically a constant speed
He opens his parachute and the air resistance will suddenly increase and he will dramatically slow down (decelerating downwards, acceleration upwards)
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Stopping distance
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The relationship between speed and thinking distance is linear, however speed and braking distance in non-linear
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Effect of speed
Speed has a greater effect on breaking distance than thinking distance as thinking distance increases lineally with speed however breaking distance increases exponentially`