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FORCES & MOTION (Momentum (Linking force and momentum (Resultant force…
FORCES & MOTION
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NEWTON'S LAWS
Newton's Second Law: The relationship between Force, mass and Acceleration is known as newton's second law of motion
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Newton's First Law: If no external force is acting on it, an object will if stationary, remain stationery & if moving, keep moving at a steady speed in a straight line.
Motion Graphs
Speed Time Graphs: The gradient of the line is numerically equal to the acceleration & The area under the line is numerically equal to the distance travelled
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Acceleration of Free Fall: the acceleration of a body falling freely in a vacuum near the surface of the earth in the earth's gravitational field: the standard value is 9.806 65 metres per second
A Force is a push or a pull, exerted by one object on another. Force has directions and magnitude
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Terminal Velocity : the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.
Inertia: a property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
Resultant Force: If two forces are unbalanced, together they are equivalent to a single force.
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A gravitational field is a region in which a mass experiences a force due to gravitational attraction
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