A boy weighing400 Newton rests on an area of 100cm square calculate the pressure exerted by the boy on the surface which supports it
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ExplDUDMUanation:
Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. ... On the other hand, velocity is a vector quantity; it is direction-aware. Velocity is the rate at which the position changes.
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