# How do you find initial velocity and final velocity?

**Contents**

## How do you find initial velocity and final velocity?

Final velocity (v) of an object equals initial velocity (u) of that object plus acceleration (a) of the object times the elapsed time (t) from u to v. Use standard gravity, a = 9.80665 m/s2, for equations involving the Earth’s gravitational force as the acceleration rate of an object.

## What is initial velocity V?

The initial velocity,vi is the velocity of the object before acceleration causes a change. After accelerating for some amount of time, the new velocity is the final velocity, vf. initial velocity = final velocity – (acceleration×time)

## What is initial velocity example?

For example, if a projectile is moving upwards with a velocity of 39.2 m/s at 0 seconds, then its velocity will be 29.4 m/s after 1 second, 19.6 m/s after 2 seconds, 9.8 m/s after 3 seconds, and 0 m/s after 4 seconds.

## What is the formula for final velocity?

Final velocity (v) squared equals initial velocity (u) squared plus two times acceleration (a) times displacement (s). Solving for v, final velocity (v) equals the square root of initial velocity (u) squared plus two times acceleration (a) times displacement (s).

## How do you find initial velocity with distance?

## What is initial velocity final velocity?

Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.

## How do you find initial velocity without time?

Examine the problem to find the displacement of the object and its initial velocity. Plug the acceleration, displacement and initial velocity into this equation: (Final Velocity)^2 = (Initial Velocity) ^2 + 2_(Acceleration)_(Displacement). Solve the problem using pen, paper and calculator.

## How do you find initial velocity of a projectile?

## What is v2 u2 2as?

Another equation of motion states v2 = u2 + 2as. As before, v = final speed, u = initial speed, a = acceleration, s = distance travelled.

## How do you find the velocity?

Velocity (v) is a vector quantity that measures displacement (or change in position, Δs) over the change in time (Δt), represented by the equation v = Δs/Δt. Speed (or rate, r) is a scalar quantity that measures the distance traveled (d) over the change in time (Δt), represented by the equation r = d/Δt.

## How do you find initial velocity in momentum?

The Momentum Calculator uses the formula p=mv, or momentum (p) is equal to mass (m) times velocity (v).

## What is initial velocity in physics?

Therefore, the initial velocity is the velocity of the object before the effect of acceleration, which causes the change. After accelerating the object for some amount of time, the velocity will be the final velocity.

## How do you find initial velocity with acceleration and distance?

To find initial velocity, start by multiplying the acceleration by the time. Then, divide that number by 2 and write down the quotient you get. Next, divide the distance by the time and write down that quotient as well. Finally, subtract your first quotient from your second quotient to find the initial velocity.

## What are the 3 formulas for velocity?

The three equations are, v = u + at. v² = u² + 2as. s = ut + ½at²