In what follows, we will consider the scalar value of velocity as in rectilinear motion. The scalar absolute value of velocity is called speed.
For example, an object that moves around a circle with a radius of 50 meters in 13 seconds would have a velocity of 2π(50)m/13s, or approximately 24.17 m/s.Velocity is a physical vector quantity that is used to measure the rate and direction of change of an object’s position in space. To do this, use the formula v (velocity) = 2πr (the circumference of the circle)/t (time). The method for finding the velocity of an object around a circle is a little different. In this case, 6m/s + 30m/s divided by 2 = 18 m/s north. To do this, add initial velocity to final velocity and divide the result by 2. Once you know both the final and initial velocity, you can calculate the average velocity of an accelerating object. For example, if an object accelerated north at a rate of 5m/s2 over 5 seconds and had a starting velocity of 6 m/s, its final velocity would be 6m/s + (5m/s2 x 5s), or 31m/s north. If you know the acceleration rate of the object, you can find the final velocity using the formula vf (final velocity) = vi (initial velocity) + a(t) (acceleration x time). If you’re finding the velocity of an object that’s accelerating instead of moving at a constant rate, things get a little more complicated. This will tell you that they ran 30 meters in 5 seconds, which means that they maintained an average velocity of 6 m/s east. Similarly, if they began their sprint at 5:35:01 pm and ended it at 5:35:06 pm, you can find the time by subtracting 1 from 6, giving you 5 seconds. For instance, if a runner began sprinting due east at the 22-meter mark along a track and ended up at the 52-meter mark, you’d subtract 22 from 52 to find the distance, or displacement, of 30 meters. Subtract the initial position from the final position to find distance, and subtract the start time from the end time to find the time. If you don’t already know the time and distance, you’ll need to calculate them first. The most basic formula for calculating velocity is velocity (v) = distance (d)/time (t). The right formula to use for calculating velocity depends on a few different factors, such as whether the object is accelerating at a constant rate, or whether it is moving in a circle as opposed to a line. Velocity is defined as the speed at which an object travels in a given direction. Even though the diver traveled six meters (one up, then five down), what matters is that the end point is four meters below the start point. The diver ended up 4 meters below the starting point, so her displacement is 4 meters downward, or -4 meters.Example 2: A diver leaps 1 meter straight up off a diving board, then falls downward for 5 meters before hitting the water.The car was displaced by (41m - 5m) = 36 meters east.After 8 seconds, the car is at position x = 41 meters. Example 1: A car traveling due east starts at position x = 5 meters.X Research source The path the object took between these two points does not matter. This, along with which direction the object traveled, tells you the displacement, or change in position. When measuring velocity, the only positions that matter are where the object started, and where the object ended up. Find the distance between the start and end points.
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