In Lesson 11 part 1, students explore forces to answer the Phenomenon Question: What can change an object’s motion? Students use an Atwood machine to begin to gather evidence (SEP.3) to explain how ...

In Lesson 11 part 2, students continue to explore forces. Students use evidence (SEP.3) gathered in the Atwood machine investigation in part 1 to explain how the strength and direction of a force ...