Module 3.5 Flashcards
What is Conservation of Momentum?
The total momentum of a system before an event must be equal to the total momentum of the system after the event, assuming no external forces act.
What is Elastic Collisions?
A collision in which the total kinetic energy of the system before the collision is equal to the total kinetic energy of the system after the collision.
What is Impulse?
The change of momentum of an object when a force acts on it. It is equal to the product of the force acting on the object and the length of time over which it acts.
What is Inelastic Collisions?
A collision in which the total kinetic energy of the system before the collision is not equal to the kinetic energy of the system after the collision.
What is Linear Momentum?
The product of an object’s mass and linear velocity.
What is Newtons First law?
An object will remain in its current state of motion, unless acted on by a resultant force. An object requires a resultant force to be able to accelerate.
What is Newtons Second law?
The sum of the forces acting on an object is equal to the rate of change of momentum of the object.
What is Newtons Third law?
Every action has an equal and opposite reaction. If an object exerts a force on another object, then the other object must exert a force back that is opposite in the direction and equal in magnitude of the same type.
If an object is in equilibrium it means the object is …
- Stationary
- Moving at a constant velocity.
What is the equation used for the principle of conservation of momentum in one-dimensional collisions?
m1u1 + m2u2 = m1v1 + m2v2
