Enter the mass, initial velocity, and final velocity of object 1, and the mass and initial velocity of object 2 to calculate the final velocity of object 2. This is valid for a perfectly inelastic collision of two objects only.

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## Conservation of Momentum Formula

The following formula is used in the conservation of momentum of two objects undergoing an inelastic collision.

M1*V1=M2*V2

- Where m1 is the mass of object 1
- V1 is the change in velocity of object 1
- M2 is the mass of object 2
- and V2 is the change in velocity of object 2

In other words, v1 and v2 are the final velocities minus the initial velocity. This equation is the law of the conservation of momentum. In this case, since v contains both the initial and final velocities, if the other variables are known, then the equation can be used to solve for the missing variable.

## Conservation of Momentum Definition

Conservation of momentum is a law of physics that says that momentum must be conserved in a closed system. In other words, momentum cannot be changed in a closed system unless acted on by an outside force.

## How to calculate the conservation of momentum?

How to calculate the conservation of momentum.

**First, determine which of the 4 variables you wish to calculate.**Using the formula above, determine which variable is being solved.

**Next, rearrange the equation for the missing variable.**Re-order the formula to calculate for the missing variable.

**Finally, calculate the missing value.**Using the conservation of momentum formula, determine the missing variable.

## FAQ

**What is conservation of momentum?**

Conservation of momentum is a law of physics that says that momentum must be conserved in a closed system. In other words, momentum cannot be changed in a closed system unless acted on by an outside force.

**How does momentum change?**

Momentum can change in one of two ways, through a change in velocity or a change in mass. Most often, since the mass of objects rarely changes, the velocity is what is changing.