SCI 104 Lecture Notes - Lecture 2: Terminal Velocity, Net Force
2 Nov 2017
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Document Summary
For every force, there exists an equal and opposite force. Consider action and reaction forces in the case of a rock falling under the influence of gravity. Answer- the falling rock pulling up on the earth. Newton"s first law of motion: the law of inertia: (originating with galileo, every object continues in a state of the rest or of uniform speed in a straight line unless acted by a nonzero force. Inertia in action: rapid deceleration is sensed by the driver who lurches forward. A= f/m: small net force, large mass small acceleration, large net force, small mass large acceleration, when acceleration is g-free fall. When the only force acting on a falling object is gravity, with negligible air resistance, the object is in free fall. An object in free fall accelerates toward earth at 10 m/s per second: when acceleration is g-free fall.
