No. What makes think KE is conserved in that situation? Do the calculation and find out for yourself.ehrenfest said:Is it true that a completely inelastic collision can be elastic (i.e. KE could be conserved) such as when you fire a gun at a metal ball at rest and the bullet and the metal ball stick togethor?
Well, it's not elastic--they stick together! KE is not conserved.Isn't completely inelastic somewhat of a misnomer since it implies that the collision is not elastic?
Just do the calculation! Use conservation of momentum:ehrenfest said:Why does the fact that they stick togethor require that KE is not conserved?
A completely inelastic collision is a type of collision in physics where two objects collide and stick together after the collision. This means that the two objects become one object and move together with a common velocity.
In a completely inelastic collision, the total momentum of the system before the collision is equal to the total momentum of the system after the collision. This is because the two objects stick together and move as one, so their combined momentum remains the same.
In a completely inelastic collision, the two objects stick together after the collision and move with a common velocity. In a partially inelastic collision, the two objects may stick together but not move with a common velocity, or they may bounce off each other with reduced velocities.
No, kinetic energy is not conserved in a completely inelastic collision. Some of the kinetic energy of the system is converted into other forms of energy, such as heat or sound, during the collision.
The coefficient of restitution is a measure of how much kinetic energy is conserved in a collision. In a completely inelastic collision, the coefficient of restitution is 0, meaning that no kinetic energy is conserved. This is because the objects stick together and there is no rebounding or bouncing.