NCERT based Class 11 Physics chapter notes on Chapter 3, Motion in a Straight Line are available here. These notes are helpful for quick revision of the chapter. This article is continuation of Class ...

It is not only moving objects whose speed can vary. The speed of the wind and the speed of sound also vary. A typical value for the speed of sound in air is about 330 m/s.

Velocity-time graphs show how the velocity (or speed) of a moving object changes with time. These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still.

CBSE Class 11 Physics Notes on Chapter 3, Motion in a Straight Line are available here. The topics covered in these notes are Speed, Uniform Speed, Variable Speed, Average Speed, Instantaneous Speed, ...

But what is the difference? If you ask any person on the street, they might say there is no difference. In non-physics use, they would be correct. However, in physics we have very specific definitions ...

At the Porsche test track, we learn the difference between speed and velocity. Unit 2 Segment B: Speed and Velocity We head to the Porsche test track to learn about the difference between speed and ...

Isaac Newton's First Law of Motion states, "A body at rest will remain at rest, and a body in motion will remain in motion unless it is acted upon by an external force." What, then, happens to a body ...