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What is the relationship between velocity and time?



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Velocity is a vector, which means it has magnitude and direction. Velocity is defined as the rate of change of displacement (distance), or delta-s over delta-t. In other words, if you divide the distance traveled by the time it took to cover the distance, you know the velocity. For example, if you cover 100 miles (delta-s = 100 miles) in two hours (delta-t = 2 hours), then the velocity is 100/2 = 50 miles per hour. Note that a change in direction also constitutes a change in velocity. But this example concentrates on the magnitude, that is, speed.