An elastic collision is a type of collision where both kinetic energy and momentum are conserved. This means that the total energy and momentum of the system remain unchanged before and after the collision. In other words, the objects involved in the collision bounce off each other without any loss of energy.
An inelastic collision is a type of collision where kinetic energy is not conserved, but momentum is still conserved. This means that some of the energy of the system is lost during the collision due to factors such as deformation, sound, or heat. In an inelastic collision, the objects involved stick together after the collision rather than bouncing off each other.
The angle of collision does not affect the speed of the objects after a collision, but it can affect their direction. In an elastic collision, the angle of incidence (incoming angle) is equal to the angle of reflection (outgoing angle). In an inelastic collision, the angle of incidence may be different from the angle of reflection due to the objects sticking together and changing direction.
The speed of objects after a collision depends on several factors, including the masses of the objects, their initial velocities, and the type of collision (elastic or inelastic). In an elastic collision, the speed of the objects after the collision will be the same as their initial speeds. In an inelastic collision, the speed of the objects after the collision will be less than their initial speeds due to the loss of energy.
The equations for calculating speed, direction, and angle after a collision are derived from the laws of conservation of energy and momentum. These laws state that the total energy and momentum of a closed system (in this case, the objects involved in the collision) remain constant. By applying these laws to the collision and solving for the unknown variables, we can derive the equations for speed, direction, and angle after a collision.