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For the speed of an object you need to know how far it is travelling in a given time. Typically you do this by measuring the time it takes for the object to travel a set distance.

For the velocity of an object you also need to know the direction the object is travelling in.

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13y ago
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14y ago

You need the distance that something traveled in a given amount of time.

The velocity is that distance divided by the time.

v=d/t

It is a very useful number because it tells you how far something will travel in a given amount of time.

You use the equation

d=v•t Direction is also required

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12y ago

Velocity is speed in vector form, or speed with direction included. Speed is simply distance traveled divided by time elapsed (d/t).

Velocity = sum of initial velocity (v0) and the product of a constant acceleration (a) and the time elapsed while accelerating (t)

v = v0 + at

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13y ago

The displacements of the particle at different times. Velocity is the rate of change of displacement.

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13y ago

Distance and Time.

Speed=Distance/Time

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12y ago

To calculate the speed of an object, you need to know the distance traveled in meters and the time in seconds. Then simply use the formula Speed equals Distance divided by Time or S=D/T.

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11y ago

Two position measurements and the time between the measurements will give the average velocity (i.e. speed and direction).

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11y ago

Speed and Direction

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Q: What do you need to know to be able to calculate the speed of an object?
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What is 677 miles into hours?

You don't convert units of length to units of time; those two are utterly incompatible.If an object moves at a certain speed, you can use the formula distance = speed x time, to relate the three. If you know two of these three pieces of information, you can calculate the third.You don't convert units of length to units of time; those two are utterly incompatible.If an object moves at a certain speed, you can use the formula distance = speed x time, to relate the three. If you know two of these three pieces of information, you can calculate the third.You don't convert units of length to units of time; those two are utterly incompatible.If an object moves at a certain speed, you can use the formula distance = speed x time, to relate the three. If you know two of these three pieces of information, you can calculate the third.You don't convert units of length to units of time; those two are utterly incompatible.If an object moves at a certain speed, you can use the formula distance = speed x time, to relate the three. If you know two of these three pieces of information, you can calculate the third.