Grade: High School - 3

PII.1.3
For a system consisting of two objects moving in two dimensions with no net external forces applied, apply the principles of conservation of linear momentum and of mechanical energy to quantitatively predict changes in the linear momentum, velocity, and kinetic energy after the interaction between the two objects.

I Can Statements Academic Vocabulary
I can apply conservation of linear momentum and mechanical energy to quantitatively predict changes in the linear momentum, velocity, and kinetic energy after the interaction between two objects moving in two dimensions with no net external forces applied.

Energy
Potential Energy
Kinetic Energy
Momentum
Linear Momentum
Mass
Velocity
Force
External Forces
Impulse

Cross Cutting Concepts
Energy and Matter
Scale, Proportion, and Quantity
Looking Back Looking Ahead
For a system consisting of a two objects with no net external forces applied, qualitatively and quantitatively analyze a two dimensional interaction (i.e. collision or separation) to show that the total linear momentum of the system remains constant.(PII.1.2)

For a system consisting of a single object with a net external force applied, qualitatively and quantitatively predict changes in its linear momentum using the impulsemomentum theorem and in its translational kinetic energy using the work-energy theorem. (PII.1.1)

Determine the individual and total linear momentum for a two-body system before and after an interaction (e.g. collision or separation) between the two objects and show that the total linear momentum of the system remains constant when no external force is applied consistent with Newton’s third law. (PI.5.4)

Demonstrate that when two objects interact through a collision or separation that both the force experienced by each object and change in linear momentum of each object are equal and opposite, and as the mass of an object increases, the change in velocity of that object decreases. (PI.5.3)

Classify interactions between two objects moving in two dimensions as elastic, inelastic, and completely inelastic. (PII.1.4)