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Q: A: ### Quick Answer

**The most common equation for speed is: speed = distance / time.** It can also be expressed as the time derivative of the distance traveled. Mathematically, it can be written as v = s/t, or v = (ds/dt), where speed is denoted by v, distance is denoted by s, and time is denoted by t. In case of uniform velocity, the first equation is used.

Speed is often confused with velocity and is thought to have the same meaning. In terms of physics, speed and velocity are two different things. Speed is a scalar quantity, which means that there is no direction attached with its definition and only represents the magnitude of its velocity. Velocity is a vector quantity and represents both the speed of an object and its direction. For example if a car travels north at 40 miles per hour, then its speed is 40 miles per hour and its velocity is 40 miles per hour to the north.

Speed is associated with the concept of distance, whereas velocity is associated with displacement. Distance, a scalar quantity, represents the length an object has covered during its time of motion. Displacement, a vector quantity, represents how far the object has moved away from its initial position during its time of motion.

Learn more about Motion & Mechanics- Q:
## What is average speed?

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Full Answer >**Average speed indicates how fast a vehicle travels over a specific distance in a certain amount of time.**This contrasts with instantaneous speed, which reveals how fast a vehicle is traveling at a particular moment.Filed Under: - Q:
## What is the formula for finding speed?

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Full Answer >**The general formula for finding speed is x = d / t, where "x" denotes the speed, "d" indicates the distance traveled and "t" represents the time it takes to cover "d."**Speed is a scalar quantity that is entirely defined by its magnitude without referencing its direction.Filed Under: - Q:
## What is the equation for centrifugal force?

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Full Answer >**The equation for centrifugal force is F**Centrifugal force is defined as the outward force that an object seems to experience when it moves in a circle._{c}= mv^{2}/r, where m equals the mass of an object, v is the speed and r is the radius, or distance from the center.Filed Under: - Q:
## What is the free-fall equation?

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Full Answer >**The equation to calculate a free-falling object's velocity or time spent falling is velocity equals gravitational acceleration multiplied by time.**This occurs if three conditions are given: an initial velocity of zero, a hypothetical infinite space to fall in and negligible air resistance.Filed Under:

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