CBSE Class 9 Science — How Forces Affect Motion
Chapter 6 of the CBSE Class 9 Science syllabus. About 66 minutes of teaching.
Unit: Motion, Force, Work and Sound
Unit weightage: 23 marks
5 topics
What is in this chapter
- 1Balanced and Unbalanced Forces foundation12 min
- 2Force of Friction12 min
- 3Newton's First Law of Motion12 min
- 4Newton's Second Law of Motion foundation16 min
- 5Newton's Third Law of Motion14 min
What to know first
This chapter builds on Describing Motion Around Us. If any of those feel shaky, start there — the concepts below assume them.
Where the marks are
CBSE publishes marks by unit, not by chapter. The Motion, Force, Work and Sound unit carries 23 of the 80 marks in the paper, across 4 chapters. Our estimate for this chapter alone is about 6 marks — useful for deciding what to study first, but it is our split of the unit, not an official CBSE per-chapter figure.
This chapter is not on the board yet.
We author chapters one at a time and only publish once the lesson has been checked end to end, so we would rather say "not yet" than ship a thin one. The syllabus above is accurate and free to use meanwhile.
Other chapters in Class 9 Science
Cell: The Building Block of LifeTissues in ActionDescribing Motion Around UsExploring Mixtures and their SeparationWork, Energy, and Simple MachinesJourney Inside the AtomAtomic Foundations of MatterSound Waves: Characteristics and ApplicationsReproduction: How Life ContinuesPatterns in Life: Diversity and ClassificationEarth as a System: Energy, Matter, and Life