### High School

## Forces and Interactions

**Newton's Second Law of Motion**

Analyze data to support the claim that Newton’s second law of motion describes the mathematical relationship among the net force on a macroscopic object, its mass, and its acceleration.

**Conservation of Momentum**

Use mathematical representations to support the claim that the total momentum of a system of objects is conserved when there is no net force on the system.

**Reducing Force in Collisions Device **

Apply scientific and engineering ideas to design, evaluate, and refine a device that minimizes the force on a macroscopic object during a collision.

**Gravitational and Electrostatic Forces Between Objects**

Use mathematical representations of Newton’s Law of Gravitation and Coulomb’s Law to describe and predict the gravitational and electrostatic forces between objects.

**Electric Current and Magnetic Fields**

Plan and conduct an investigation to provide evidence that an electric current can produce a magnetic field and that a changing magnetic field can produce an electric current.