Which of the following describes velocity? (1 point)

Velocity is the sum of all of the forces acting on an object.
Velocity is a force that changes an object's speed and/or direction.
Velocity is the speed of an object in a particular direction.
Velocity is the resistance of an object to a change in its speed or direction

Velocity is the speed of an object in a particular direction.

The correct option is:

Velocity is the speed of an object in a particular direction.

To determine which option describes velocity, let's analyze each choice:

1. Velocity is the sum of all of the forces acting on an object.
This option describes the net force acting on an object, but it doesn't accurately define velocity. Velocity involves both speed and direction, whereas the sum of forces focuses on the overall force acting on an object.

2. Velocity is a force that changes an object's speed and/or direction.
This option confuses velocity with a force. In reality, velocity is not a force but rather a measure of an object's speed and direction of motion.

3. Velocity is the speed of an object in a particular direction.
This option correctly defines velocity. Velocity measures the rate at which an object moves in a given direction, taking both speed and direction into account. By choosing this option, you have described velocity accurately.

4. Velocity is the resistance of an object to a change in its speed or direction.
This option describes the concept of inertia, not velocity. Inertia refers to an object's tendency to resist changes in motion, while velocity focuses on the speed and direction of an object's motion.

Therefore, the correct description of velocity from the given options is: "Velocity is the speed of an object in a particular direction."