SC15.8.9
Use Newton’s second law to demonstrate and explain how changes in an object’s motion depend on the sum of the external forces on the object and the mass of the object (e.g., billiard balls moving when hit with a cue stick).
Use Newton’s second law to demonstrate and explain how changes in an object’s motion depend on the sum of the external forces on the object and the mass of the object (e.g., billiard balls moving when hit with a cue stick).
Unpacked Content
UP:SC15.8.9
Vocabulary
- Sir Isaac Newton
- Newton's Second Law of Motion
- Mass
- Acceleration
- Potential energy
- Kinetic energy
- Force
- External force
- Sum
- Motion
Knowledge
Students know:
- The acceleration of an object is determined by the sum of the forces acting on it; if the total force on the object is not zero, its motion will change.
- The greater the mass of the object, the greater the force needed to achieve the same change in motion.
- For any given object, a larger force causes a larger change in motion. Force = mass x acceleration; F=ma.
Skills
Students are able to:
- Demonstrate Newton's second law.
- Articulate a statement that relates a given phenomenon to a scientific idea, including Newton's second law and the motion of an object.
Understanding
Students understand that:
- Newton's Second Law states that changes in an object's motion depends on the sum of the external forces on the object and the mass of the object.
Scientific and Engineering Practices
Constructing Explanations and Designing Solutions
Crosscutting Concepts
Stability and Change
