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# Velocity Calculator

Select the quantity to be measured and the calculator will calculate either velocity, acceleration, distance, time, or average velocity by using the respective equation.

$$d = vt$$

$$v = \frac{d}{t}$$

$$t = \frac{d}{v}$$

To Calculate:

Distance

Time

$$v_i = v_f - at$$

$$t = \frac{v_f - v_i}{a}$$

$$a = \frac{v_f - v_i}{t}$$

$$v_f = v_i + at$$

To Calculate:

Velocity (v)

Time (s)

Velocity Calculator by $$v_i^2 = v_f^2 + 2as$$

$$v_i = \sqrt{v_f^2 - 2as}$$

$$s = \frac{v_f^2 - v_i^2}{2a}$$

$$a = \frac{v_f^2 - v_i^2}{2s}$$

$$v_f = \sqrt{v_i^2 + 2as}$$

To Calculate:

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Velocity calculator of physics specifically programmed to calculate velocity/speed of a moving object. This velocity formula calculator uses different equations of physics to find Initial Velocity, final velocity / speed and more.

This velocity formula calculator works in three different ways including:

• First, with this velocity calculator, you will be able to calculate velocity according to its definition that uses the well-known velocity formula of physics
• The second method used by this smart velocity time calculator to determine the velocity change that is caused by acceleration over a specific time interval
• The third way is average velocity that used by our velocity solver to determine various velocities over different distances

In simple words, this calculator for velocity is used when you need to analyze certain values for velocities. Now, we are here going to discuss speed vs velocity, how to find velocity with calculator and step-by-step, a formula for velocity, and different velocity related-terms. So, before exploring these all terms, read on and start with the basic velocity definition physics.

For convenience, consider this free acceleration calculator to calculate acceleration by using different acceleration formulas.

## What is Velocity in Physics?

A velocity definition of physics is referred to as a vector measurement of the rate and direction of motion. In other words, velocity is a measure of how quickly an object moves. When it comes to the velocity equation, it is stated as the change in the position of an object, divided by the time. You get more clearance with the formula for velocity.

### What is The Formula For Velocity?

The velocity is said to as the time rate of change of displacement. So, the velocity formula physics is:

$$v = \frac {d}{t}$$

In this velocity equation;

• $$‘v’$$ represents the velocity
• $$‘d’$$ represents the displacement
• $$‘t’$$ represents the time

Velocity After a Certain Time of Acceleration:

$$Final velocity = Initial Velocity + Acceleration \times Time$$

Our total velocity calculator also uses the same velocity calculating formula to calculating velocity accurately.

### Units of Velocity:

The SI (metric system) unit of velocity is expressed as meter per second $$(m/s)$$ or as the SI base unit of $$ms^-1$$

Alternatively, the magnitude of velocity can also be expressed in centimeters per second $$(cm/s)$$.

#### Some Other Velocity Units:

These are some other units that identify velocity:

• Kilometers per hour $$(km/h)$$
• Knot $$(unit)$$
• Feet per minute
• Foot per second $$(ft/s)$$
• Meter per hour $$(m/h)$$
• Miles per hour $$(mph or mi/h)$$
• Inch per second $$(in/sec)$$
• Speed of light

If you don’t want to perform manual calculations, simply use the velocity formula calculator to calculate velocity.

### How Our Calculator Works?

#### Velocity (Distance Covered):

Inputs:

• First, hit the “distance covered” tab
• Then, select the option for which you want to perform calculations, it can either “velocity, time, or distance”
• Very next, add the values into the remaining fields
• Now, all you need to make a click on the calculate button

Outputs:

The velocity finder calculates either:

• Velocity
• Time
• Distance

#### Velocity After a Certain Time Acceleration:

Inputs:

• Hit the “acceleration” tab
• Now, choose the option from the drop-down list, it can either “initial velocity, time, acceleration, or final velocity.”
• Then, all you need to enter the values into the remaining fields of this calculator
• Hit calculate button

Outputs:

The calculator for velocity calculates either:

• Initial velocity
• Time
• Acceleration
• Final velocity

#### Average Velocity:

Inputs:

• Hit the “Average velocity” tab
• Then, enter the values for velocity and time into the designated fields
• Hit calculate

Outputs:

The calculator shows:

• Average Velocity

## What is The Difference Between Speed and Velocity (Speed VS Velocity)?

Well, there is a slight difference between speed and velocity, read on to know!

### Speed:

According to the technical speed definition, it is a scalar quantity that represents the rate of motion distance per time.

• Remember that, speed is directly proportional distance $$(s)$$ when time $$(t)$$ is constant – $$v ∝ s$$ (t constant)
• And, speed is inversely proportional to time $$(t)$$ when the distance $$(s)$$ is constant – $$v ∝ 1/t$$ (s constant)

So, let’s combine these both rules together that indicates the speed definition to generate the formula for speed:

Speed Formula is equal to:

$$v = \frac {s}{t}$$

Where;

$$‘v’$$ is used for speed

$$‘s’$$ is used for distance

$$‘t’$$ is used for time

#### Instantaneous Speed:

According to the definition of physics, it is the first derivative of distance with respect to time.

### Velocity:

Yes – we mentioned above the definition of velocity and even the velocity physics formula. Now, let’s move ahead to know about some other types of velocity! Remember that formula for velocity only works when an object has a constant speed in a constant direction. You can use a physics constant velocity calculator that calculates velocity of an object that has a constant speed in a constant direction.

Keep in mind that this velocity formula only works when an object has a constant speed in a constant direction

#### Initial Velocity:

The initial velocity is the velocity of the object before the effect of any acceleration, which causes the change in motion.

Initial Velocity Formula:

$$Initial velocity = final velocity – (acceleration \times time)$$

$$vi = vf – at$$

You can give a try to simple online initial speed calculator to calculate initial speed of an object. Also, read on to know detail about instantaneous velocity.

Now, let us tells you about the difference between velocity and speed with respect to ‘Average.’

#### Final Velocity:

The final velocity is said to be the velocity of a given object after a period of time. Our initial and final speed calculator of physics also helps you to calculate both the initial and final speed of an object.

Final Velocity Formula is:

$$v= u+ at$$

$$S = ut + 1/2 at^2$$

$$v^2 = u^2 + 2as$$

Where;

• $$‘v’$$ represents final velocity after time $$t$$
• $$‘u’$$ represents the initial velocity
• $$‘a’$$ represents an acceleration
• $$‘s’$$ represents distance covered in time $$t$$

Otherwise, at any circumstance,

$$v= u+ ∆v$$

Change in velocity formula:

$$∆v$$: change in velocity

Well, use the above formula or change in velocity calculator to understand how to find final velocity.

## Certain Velocity Related Terms & Their Physics Formula’s:

### Average Velocity:

The average velocity of an object is said to be as its total displacement divided by the total time taken. Also, it indicates the rate at which an object changes its position from one place to another. Average velocity is a vector quantity. The SI unit is meters per second. However, any distance unit per any time unit only can be considered when necessary, such as miles per hour (mph) or kilometer per hour (kmph).

### Instantaneous Velocity:

It is said to be as the average speed between two points on the path in the limit that the time (and that’s the reason why the displacement) between the two points approaches zero.

The instantaneous velocity is the quantity that tells how fast an object is moving anywhere along its path. It is indicated as the average velocity between two points on the path in the limit that the time (and thus the displacement) between the two points that approaches zero.

### Terminal Velocity:

Terminal velocity is referred to as the maximum velocity that attainable by an object as it falls through a fluid (air is the best example). It typically takes place when the sum of the drag force $$(Fd)$$ and the buoyancy becomes equal to the downward force of gravity $$(FG)$$ acting on the object.

### Escape Velocity:

When it comes to physics, specifically (celestial mechanics), escape velocity is said to be as minimum speed, which required for a non-propelled, free object to escape from the gravitational influence of a huge body.

More specifically, it is said to be as the speed that an object requires to be traveling to break free of planet or moon’s gravity and enter orbit.

## Interesting Facts about Speed and Velocity:

• Galileo Galilei was the first scientist who measures speed as distance over time
• A speedometer is said to be the best example of instantaneous speed
• You can also express a speed of light as 186,282 miles per second
• The speed of sound in dry air can be expressed as 343.2 meters per second
• The escape velocity of Earth is referred to as the speed that needed to escape from Earth’s gravitational pull. It is expressed as 25,000 miles per hour

## FAQ’s (Velocity):

### How do you find velocity with distance and time?

All you need to plug-in the values into above velocity distance and time calculator to find velocity with distance and time.

### How do you find final velocity with calculator?

All you need to do the following:

• First of all, you have to hit the ‘acceleration tab’
• Very next, you have to choose the ‘final velocity’ option from the drop-down menu of final velocity calculator
• Then, you have to enter the value of the initial velocity into the designated box
• Right after, you have to enter the value of acceleration into the given box
• Finally, you have to enter the value of the time into the designated field, then, hit the calculate button, the calculator for final velocity will instantly calculate final velocity for the given inputs

### How long does it take to reach terminal velocity?

An individual who is falling at low altitude will reach terminal velocity after about 12 seconds, falling some 450 meter (1,500 ft) in that time. Then, he/she will maintain this speed without falling any faster.

## References:

From Wikipedia, the free encyclopedia – Constant velocity vs acceleration – Difference between speed and velocity – Equation of motion – Average Velocity – Instantaneous velocity (change in position) – Quantities that are dependent on velocity – Relative velocity – Scalar velocities – Polar coordinates

From the source of thoughtco – By Andrew Zimmerman Jones – What Is Velocity in Physics (The concept is related to distance, rate, and time) – Velocity Formula – Units of Velocity – Why Velocity Matters – Sample Velocity Problem – How to Find the Velocity of Something