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1-Dimensional Vertical Motion. Free Fall - an object dropped from the surface of a planet in the absence of air resistance undergoes “free fall” Acceleration due to the force of gravity, on earth, is known as, “g”. g = 9.8 m/s/s
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1-Dimensional Vertical Motion Free Fall - an object dropped from the surface of a planet in the absence of air resistance undergoes “free fall” Acceleration due to the force of gravity, on earth, is known as, “g”. g = 9.8 m/s/s All objects, on earth, accelerate at the constant rate of 9.8 m/s/s, in the absence of air resistance. http://www.hq.nasa.gov/alsj/a15/video15.html#closeout3 Air resistance - the force exerted by the air on a falling object Terminal Velocity - the largest velocity that is reached by a falling object when air resistance balances the pull of gravity the object stops accelerating and speed remains constant = TERMINAL SPEED. http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/newtlaws/sd.html