AS Level Physics 9702 Paper 3 Notes



 

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Physics 9702 AS Level Notes - Definitions

Measurements Derived quantities   Physical quantities that are defined in terms of based quantities. Systematic error   Error in measurement that shifts all readings away from the true value by a constant amount.   Random error   Error in measurement that cause readings to scatter around the true value.   Accuracy   The degree of closeness of measurements to the true value.   Precision   The range of measurements.   Mechanics Distance Length of route covered by an object. Displacement The distance moved in a particular direction. Speed The distance travelled per unit time. Velocity The displacement per unit time. Acceleration The rate of change of velocity. Acceleration of Free Fall The acceleration on an object when the only force acting on it is gravitational pull of the Earth. Free Fall The downward motion of an object under the influence of gravitational force only with a constant acceleration. (g=9.81ms^-2) Newton’s First Law of Motion An object will ma
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