Q:

# Can an object have a varying speed if its velocity is constant?

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An object does not have a varying speed if its velocity is constant. A constant velocity implies that an object is moving in a straight line at an identical rate over time.

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When an object has a constant velocity, it moves an equal distance in an equal direction over equal periods of time. Both speed and direction are unchanging when an object has constant velocity. It is, however, possible to have an item with constant speed change velocity. Speed is the magnitude of an object's velocity; an object can have constant speed but changing direction. According to Zona Land Education, an example of this is when a car goes around a curve at a constant speed; its velocity changes because its direction changes.

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## Related Questions

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Instantaneous velocity is the velocity of an object at a specific point in time. This means that anywhere along the timeline of an objects movement, it will have a specific velocity.

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In projectile motion, horizontal velocity is the rate at which an object is traveling parallel to the earth. Scientists calculate horizontal velocity using the formula v = d/t, the same formula used to determine the speed of an automobile. In projectile motion, horizontal velocity does not change; however, the forces of gravity give the object vertical acceleration, causing it to stop when it hits the ground.

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When an object reaches its terminal velocity, it can no longer accelerate, so its acceleration becomes zero, and it falls at a constant speed. As an object falls freely through the air, it has two forces acting upon it: gravity and drag.

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Terminal velocity is the velocity at which an object in freefall no longer accelerates due to gravity because the drag force of the surrounding air equals the gravitational force of Earth. Objects with more mass have more weight, and it takes more drag force to reach terminal velocity.