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The velocity of a moving object is determined by both its speed and direction. Speed refers to how fast an object is moving, while direction indicates the path it is taking. Together, speed and direction make up the velocity of the object.
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The average speed of an object moving in a specific direction is calculated by finding the mean of the magnitude of its velocities in various directions. This involves taking into account both the speed and the direction of the object's motion to determine an overall average.
Two trains can have different velocities even if they are moving at the same speed if they are moving in different directions. Velocity is a vector quantity that includes both the speed of an object and its direction of motion. Therefore, if two trains are moving at the same speed but in different directions, they will have different velocities.
The inertia of a moving object determines its resistance to changes in its state of motion. An object with more inertia will be harder to speed up or slow down compared to an object with less inertia. This is because a higher inertia requires more force to change the object's velocity.
Momentum