All Flashcards
What is the effect of friction during a collision?
Friction converts kinetic energy into heat and sound energy, reducing the total kinetic energy of the system.
What happens when kinetic energy is not conserved in a collision?
The collision is classified as inelastic.
What is the effect of objects sticking together after a collision?
It is a perfectly inelastic collision, resulting in maximum kinetic energy loss.
What causes kinetic energy to be transformed into sound during a collision?
The impact and vibrations between the colliding objects.
What is the effect of no external forces acting on a system during a collision?
The total momentum of the system is conserved.
What happens when kinetic energy is not conserved in a collision?
The collision is inelastic, and kinetic energy is transformed into other forms of energy like heat, sound, or deformation.
What is the effect of nonconservative forces like friction on a collision?
Kinetic energy is dissipated from the system, leading to an inelastic collision.
What happens when two objects stick together after a collision?
The collision is perfectly inelastic, and they move as one unit with the same final velocity.
What is the effect of increasing the masses of colliding objects on the final velocity in a perfectly inelastic collision?
For the same initial velocities, the final velocity of the combined mass will generally decrease, according to the conservation of momentum.
What happens when a collision occurs on a surface with friction?
The change in total kinetic energy of the system will be lower (more negative) due to the additional energy loss from friction.
What is an elastic collision?
A collision where the total kinetic energy of the system is conserved.
What is an inelastic collision?
A collision where the total kinetic energy of the system is not conserved; some kinetic energy is transformed into other forms of energy.
What is a perfectly inelastic collision?
A special case of inelastic collisions where the colliding objects stick together and move as one unit after the collision, resulting in maximum kinetic energy loss.
Define kinetic energy.
Energy that a body possesses by virtue of being in motion.
What does conservation of momentum mean?
In a closed system, the total momentum remains constant if no external forces act on the system.