We found that the stone's velocity is 0 m/s after three seconds, when it is at a height of 45 metres. The acceleration is taken as \(-10\) m/s\(^2\). We return to the example of the stone being launched vertically upwards from ground level with an initial velocity of 30 m/s. ![]() Lets take a more complex example: whats the average speed if you. We will look at examples involving motion with constant acceleration. The formula tells you that to calculate speed you must do distance time. Theres a simple formula which governs the three, and it can be expressed with either. The average velocity is the displacement (a vector quantity) per time ratio. On the other hand, velocity is a vector quantity it is a direction-aware quantity. The average speed is the distance (a scalar quantity) per time ratio. ![]() Content Average velocity and average speedīefore turning our attention to problems involving non-constant acceleration and using calculus, we consider the concept of average velocity. Speed, being a scalar quantity, is the rate at which an object covers distance.
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