GRADE 6 SCIENCE · CHAPTER 3
Forces, energy & waves
Study each lesson in order, or choose the idea you need today.
- Choose a book
- Choose a chapter
- Study a lesson
Forces & motion
Combine forces along a line
Calculate a net force from stated opposite directions and distinguish balance from rest.
AN EXAMPLE FROM THIS CHAPTER
A cart has a 7 N force right and a 3 N force left. What is the net force?
Show answer & explanation
4 N right
The opposite forces subtract: 7 − 3 = 4 N toward the larger rightward force.
Curriculum & source notes
These are original Little Play study books organized around U.S. school topics. The official curriculum references below guide topic scope and progression. Coverage is selected, not a complete curriculum or a verified match to every state standard. They are not copies of a publisher’s textbook. Check your school’s syllabus and book edition.
High-school courses can be taken in different years. Choose the topic that matches the student’s current course.
Read all curriculum references →