Scalar quantity - A quantity has magnitude (size) only, Vector quantity - A quantity has magnitude and direction, Speed - distance travelled per unit time, Velocity - speed in a given direction, Acceleration - change in velocity per unit time, Mass - amount of matter, Weight - a gravitational force on an object that has mass, Gravitational field strength - force per unit mass, Density - mass per unit volume., Spring constant - force per unit extension,

IGCSE Physics Key Terms 1

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