January 2026
Intermediate
312 pages
10h 23m
English
Content preview from Nvision Foundation Physics Grade 9 2026
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Learning Outcomes
After reading this chapter, you would be able to:
✦ discuss work and how it is calculated.
✦ explain energy, its types and conservation.
✦ describe power and its basics.
Geekspeak
❖ Work
❖ Conservative forces
❖ Non-conservative forces
❖ Kinetic energy
❖ Potential energy
❖ Work energy theorem
❖ Conservation of energy
❖ Power
Introduction
In everyday life, the term 'work' is used to describe a muscular activity or a mental effort. In physics, the term 'work' has a special meaning. Work is said to be done when the force acts on a body and produces motion in it in the direction of force (or in the direction of the ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.