Hi, in line with Newton's laws of motion the momentum before and after a collision is always conserved (when no external force is applied to change the systems momentum). In elastic collisions we can apply the conservation of momentum and conservation of energy principles. In inelastic collisions we can only apply the conservation of momentum principle. Energy is not conserved in inelastic collisions because energy is lost through small deformations, noise, friction, etc. We can compute the coefficient of restitution that helps determine this degree of energy loss from impulse-momentum equations.
The same
When the collision is perfectly elastic then energy is not lost but exchanged between the bodies collided. So total KE would remain the same before and after collision. But in case of inelastic collision, there would be loss of energy in the form of heat or sound or vibration etc etc. But whether collision is elastic or inelastic the momentum is conserved. That is, the total momentum in a given direction would be the same before and after collision.
just check momentum before and after and if they're the same then elastic if not then inelastic.
In an elastic collision, no kinetic energy is lost, and the relative speed of separation of the objects after the collision is the same as the relative speed before the collision. In an inelastic collision, part of the elastic energy is lost, and the relative speed after the collision is less.
In the case of an elastic collision, you can write two equations, which can help you solve certain practical problems. 1) Conservation of momentum. The total momentum before the collision is the same as the total momentum after the collision. 2) Conservation of energy. The total mechanical energy before and after the collision are the same. Note: The first equation is also valid for inelastic collisions; the second one is not.
Same as before the collision. This applies whether the collision was elastic (no loss of kinetic energy) or inelastic (some kinetic energy lost).
The same as the total momentum before the collision.
That means that total momentum doesn't change. It is the same before and after the collision.
No loss in energy due to collision is for elastic collision. But there will be a loss during collision in case of in-elastic collision. So KE will remain constant before and after collision in case of elastic collision.
I assume you mean the total MOMENTUM. The momentum depends on the situation. The only thing you can be sure of is that the total momentum after the collision will be the same as the total momentum before the collision. You can often use this to solve problems about collisions.
By the Law of Conservation of Momentum, the total momentum after the collision must be the same as the total momentum before the collision.
In an elastic collision, all initial kinetic energy is fully restored as final kinetic energy. where nothing is converted into noise, heat or any other form of energy. In an inelastic collision, kinetic energy is "lost" to thermal or sound energy.