The displacement d is (x2 – x1) units in the x-direction plus (y2 – y1) units in the y-direction. The magnitude of the displacement is d = ((x2 – x1)2 + (y2 – y1)2)½. This follows from the Pythagorean theorem.

## What is your displacement vector?

Well, Displacement is nothing more than a change in position and the Displacement Vector is the distance between your starting point and stopping point. Displacement is a vector that is the shortest distance from the initial to the final position, as Wikipedia accurately states.

## How do you find the net displacement vector?

Displacement is a vector quantity, which has both a magnitude (size) and a direction. To calculate displacement, you need to subtract the position vector of the initial position from the position vector of the final position.

## Is momentum a scalar or vector?

Momentum, product of the mass of a particle and its velocity. Momentum is a vector quantity; i.e., it has both magnitude and direction.

## Is momentum conserved?

Momentum is conserved in the collision. Momentum is conserved for any interaction between two objects occurring in an isolated system. This conservation of momentum can be observed by a total system momentum analysis or by a momentum change analysis.

## Is momentum conserved in all collisions?

Generally, momentum is conserved in all types of collisions. There are four classes of collisions based on what happens during the collision and, in particular, what happens to the total kinetic energy of the system.

## What does it mean momentum is conserved?

Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant.

## Where does the extra kinetic energy come from?

The kinetic energy of an object is the extra energy it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its current velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

## Does energy ever stop?

As we know through thermodynamics, energy cannot be created nor destroyed. It simply changes states. The total amount of energy in an isolated system does not, cannot, change. We can gain energy (again, through chemical processes), and we can lose it (by expelling waste or emitting heat).

## Where does energy come from and where does it go?

All of our energy comes from the sun, which is our nearest star. The sun sends out huge amounts of energy through its rays every day. We call this energy solar energy or radiant energy. Without the sun, life on earth would not exist, since our planet would be totally frozen.