NCERT Solutions for class 9 Science Chapter 9: Force and Laws Of Motion

NCERT Solutions for class 9 Science Chapter 9: Force and Laws Of Motion

NCERT Solution Class 9 Science Chapter 9 explains what is a force and its application with various examples. It also explains the three laws of motion along with examples and mathematical formulations. Conservation of Momentum is explained in a simple way. Various activities are incorporated into the chapter to explain the concepts in an easy way. NCERT Class 9 Science Chapter 9 motion also describes the natural tendency of objects to resist a change in their state of rest or of uniform motion known as inertia in a detailed way. NCERT Class 9 Science Chapter 9 motion is covered under unit 3 Motion, Force and Work. Refer to previous year question papers and sample papers to know the type of questions that appear along with and the allotment of marks pattern.

This chapter explains the 3 laws of motions with the help of diagrams and examples. Below are the 3 laws of motions:
  1. The first law of motion: An object continues to be in a state of rest or of uniform motion along a straight line unless acted upon by an unbalanced force.
  2. The second law of motion: The rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force.
  3. Third law of motion: To every action, there is an equal and opposite reaction and they act on two different bodies. 
The topics that are covered under this chapter include:

  • Inertia and Mass (4 questions)
  • Conservation of Momentum (4 questions)
  • Post-Chapter Exercises (18 Questions)

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