# What is the momentum of the two cars after collision if its momentum before collision is 50 kgm s?

## What is the momentum of the two cars after collision if its momentum before collision is 50 kgm s?

Let, P = Momentum of car 2 after the collision. Total initial momentum = Initial momentum of car 1 + Initial momentum of car 2 = 0 + 50 kgm/s = 50 kgm/s. Total final momentum = 10 kgm/s + P. Thus, P = 40 kgm/s.

## What is the velocity of a car after collision?

Once the momentum of the individual cars are known, the after-collision velocity is determined by simply dividing momentum by mass (v=p/m).

## What is the momentum of the system made up of the two cars after the collision?

The momentum of each car is changed, but the total momentum ptot of the two cars is the same before and after the collision if you assume friction is negligible. where F1 is the force on car 1 due to car 2, and Δt is the time the force acts, or the duration of the collision.

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## Does an outside force act on the two car system during the collision?

The 2 cars together are an isolated system because there are no net external forces acting on the system (no friction, gravity and normal add to zero, and the internal collision forces sum to zero). Therefore, the momentum of the system of both cars is conserved (∆psys=0 because ΣFsys = 0).

## What is the formula for total momentum?

The total momentum (ptot) of a system is equal to the sum of the momenta of all objects within that system. p t o t = p 1 + p 2 + p 3 + . . . Furthermore, the momentum of each of the individual objects in the system is equal to the mass (m) of that object multiplied by its velocity (v).

## What is the formula for momentum in a collision?

Before the collision, one car had velocity v and the other zero, so the centre of mass of the system was also v/2 before the collision. The total momentum is the total mass times the velocity of the centre of mass, so the total momentum, before and after, is (2m)(v/2) = mv.

## What is the formula for final velocity after a collision?

What is the formula of collision? From the conservation of momentum, the formula during a collision is given by: m1v1 + m2v2 = m1v’1 + m2v’2. If the collision is perfectly inelastic, the final velocity of the system is determined using v’ = (m1v1 + m2v2)/m1 + m2.

## How to calculate velocity?

Determine the object’s original velocity by dividing the time it took for the object to travel a given distance by the total distance. In the equation V = d/t, V is the velocity, d is the distance, and t is the time.

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## How do you find the velocity of the second object after a collision?

If two particles are involved in an elastic collision, the velocity of the second particle after collision can be expressed as: v2f=2⋅m1(m2+m1)v1i+(m2−m1)(m2+m1)v2i.

## Is momentum always conserved?

Momentum is always conserved because there is no external force acting on an isolated system (like the universe). Since momentum can never change, all of its components will always remain constant. Problems brought on by collisions should be resolved using the rule of conservation of momentum.

## What is the formula for momentum before and after a collision?

The Impulse-Momentum Principle says I=mv−mu I = m v − m u which is final momentum – initial momentum so Impulse is the change in momentum. The principle of states that total momentum before impact is equal to total momentum after impact, m1u1+m2u2=m1v1+m2v2. m 1 u 1 + m 2 u 2 = m 1 v 1 + m 2 v 2 .

## What is the unit of momentum?

The units for momentum would be mass units times velocity units. The standard metric unit of momentum is the kg•m/s. While the kg•m/s is the standard metric unit of momentum, there are a variety of other units that are acceptable (though not conventional) units of momentum.

## How do you find the momentum of two objects before a collision?

Then the total momentum of the system initially, that’s before the collision, is equal to the mass of the first object multiplied by the velocity of the first object. This is the momentum of the first object. Plus the mass of the second object multiplied by the velocity of the second object.

## What is the momentum of the colliding objects before and after collision?

This principle of conservation of momentum is a fundamental concept in physics. It means that the total momentum of the colliding objects before the collision is equal to the total momentum after the collision. This is true for both elastic and inelastic collisions.

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## How momentum before collision is equal to momentum after collision?

Law of conservation of momentum: The law states, in absence of external forces the momentum of the system is conserved. It means that the total momentum before the collision is equal to the total momentum after the collision.