Every action has an equal and opposite reaction. This is the most heard and talked of among Newton's three laws of motion. The science teacher had explained it very interestingly in school. The other ...

However hard you work on a topic, you cannot succeed until you practice the same. To help students get enough practice, NCERT books offer a variety of questions at the end of each chapter. These can ...

It’s a term in physics. Inertia refers to “the tendency of a body at rest to remain at rest or of a body in straight line motion to stay in motion in a straight line unless acted on by an outside ...

All of the objects in our solar system are acted upon by forces. Forces are pushes or pulls. Every force has both a strength and a direction. Applying a force on something–like pushing a toy car–can ...

Why does one ball beat another in a race down a ramp, even if they have the same mass and volume? Explore the concept of ...

Force and Laws of Motion (Chapter 9) of NCERT Class 9 Science Book is available here in PDF format. We have provided the latest edition of NCERT Class 9 Science Chapter 9 for the current academic ...