Velocity
Velocity is a measure of how quickly an object’s position changes over time
Velocity is a measure of how quickly an object’s position changes over time. It is a vector quantity, which means it has both magnitude (speed) and direction. Mathematically, velocity is defined as the rate of change of displacement with respect to time.
To calculate the velocity of an object, you need to know the object’s displacement and the time it took to undergo that displacement. Displacement refers to the change in position of an object from its initial to final position. It is also a vector quantity with magnitude and direction.
The formula for velocity is:
Velocity = Displacement / Time
Velocity is often expressed in meters per second (m/s), but it can also be measured in other units such as kilometers per hour (km/h) or miles per hour (mph), depending on the context.
Let’s look at an example to illustrate how to calculate velocity:
Suppose a car traveled a distance of 200 meters towards the east in 20 seconds. To find the velocity, we divide the displacement (200 meters) by the time (20 seconds):
Velocity = Displacement / Time
Velocity = 200 meters / 20 seconds
Velocity = 10 meters per second (m/s) towards the east
In this example, the car has a velocity of 10 m/s towards the east.
It is important to note that velocity considers both the speed at which an object is moving and the direction in which it is moving. For example, if an object is moving at a constant speed of 10 m/s towards the east, its velocity remains 10 m/s towards the east as long as the speed and direction are constant. If either the speed or direction changes, then the velocity will also change.
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