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
✦ understand force of gravitation and its significance.
✦ calculate gravitational force between different celestial objects.
✦ understand about acceleration due to gravity and its variation.
✦ understand about acceleration due to gravity.
✦ understand motion under gravity.
✦ understand Kepler’s law.
Geekspeak
❖ Gravitation
❖ Gravitational force
❖ Gravitational constant
❖ Acceleration of gravity
❖ Kepler’s Law
❖ Orbital speed
❖ Escape speed
❖ Weightlessness
❖ Mass
❖ Weight
❖ Orbital speed
Introduction
The motion of celestial bodies such as the sun, the moon, 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.