## Is Joule The unit of momentum?

The joule-second is a unit of action or of angular momentum. The joule-second also appears in quantum mechanics within the definition of Planck’s constant. Angular momentum is the product of an object’s moment of inertia, in units of kg⋅m2 and its angular velocity in units of rad⋅s−1.

## What is the unit of momentum class 9th?

The unit of momentum is Kg ms-1.

## What is initial momentum?

Initial momentum refers to the momentum of an object when it first starts moving.

## What is initial momentum formula?

To find initial momentum p_{i}, substitute p_{i} for p, 4.88-kg for mass m of the object and 31.4 m/s for the velocity of the object present in the equation p = mv, p_{i} = mv. = (4.88 kg) (31.4 m/s)

## Does momentum calculate without mass?

How can an object have momentum without mass? It can do this if it is a wave. A wave transports momentum via its waving motion and not by physically transporting an object with mass. “Momentum” is the directional property of an object in motion that describes its ability to influence another object upon impact.

## How do you calculate momentum combined?

We say that momentum is conserved….Momentum calculations

1. Work out the total momentum before the event (before the collision): p = m × v.
2. Work out the total momentum after the event (after the collision):
3. Work out the total mass after the event (after the collision):
4. Work out the new velocity:

## Can 2 objects with different masses have the same momentum?

Two objects of different mass are movingat the same speed; the more massive object will havethe greatest momentum. A less massive object cannever have more momentum than a more massiveobject. Two identical objects are moving in oppositedirections at the same speed.

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## What’s the difference between momentum and energy?

momentum is the quantity which gives us the idea of an object’s mass and velocity in and its direction of motion whereas kinetic energy gives us the idea of how much energy does the object have while doing so i.e, moving in that direction with that velocity.

## What is momentum used for?

Momentum is a vector quantity: it has both magnitude and direction. Since momentum has a direction, it can be used to predict the resulting direction and speed of motion of objects after they collide.

## What is true momentum?

Two objects of different mass are moving at the same speed; the more massive object will have the greatest momentum. i. A less massive object can never have more momentum than a more massive object. j.

## What happens when two objects with the same momentum collide?

When two objects collide the total momentum before the collision is equal to the total momentum after the collision (in the absence of external forces). This is the law of conservation of momentum.

## Is momentum a force?

Momentum is the force that exists in a moving object. The momentum force of a moving object is calculated by multiplying its mass (weight) by its velocity (speed).

## What is always constant in a collision?

In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.