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PowerPoint Template UNIT 1 VECTOR English for Physics GROUP EP150 4R LOGO VECTOR Velocity? Work? Energy? Mass? A study of motion involves the introduction of various quantities that are used to describe the physical world Examples of such quantities include distance, displacement, speed, velocity, acceleration, force, mass, momentum, energy, work, power, etc EP150 4R LOGO All of these quantities can be divided into two categories vectors and scalars A vector quantity is fully described by its ma[.]