What is the meaning of inertia in physics?
Inertia is a property of matter that causes it to resist changes in velocity (speed and/or direction). According to Newton’s first law of motion, an object with a given velocity maintains that velocity unless acted on by an external force. Inertia is the property of matter that makes this law hold true.
What are the SI prefixes?
SI Prefixes
| prefix | symbol | decimal |
|---|---|---|
| giga | G | 1 000 000 000 |
| mega | M | 1 000 000 |
| kilo | k | 1 000 |
| hecto | h | 100 |
How many prefixes are there in physics?
Prefixes should not be used on its own or combined into multiples compound prefixes. i.e. pg not µµg; 10 µg, not mcg.
What is inertia motion?
Inertia of motion is defined as the inability of a body to change it state of motion by itself. It is related to mass.
What is a prefix centi?
Centi- is a combining form used like a prefix meaning “hundredth” or “hundred.” In science, centi- is very commonly used as a prefix in units of measure equaling a factor of “one hundredth.”
What are prefixes in physics give three example?
THE QUEST FOR MICROSCOPIC STANDARDS FOR BASIC UNITS
| Prefix | Symbol | Example (some are approximate) |
|---|---|---|
| micro | µ | 10-6 m |
| nano | n | 10-9 g |
| pico | p | 10-12 F |
| femto | f | 10-15 m |
What is prefix short answer?
A prefix is an affix which is placed before the stem of a word. Adding it to the beginning of one word changes it into another word. For example, when the prefix un- is added to the word happy, it creates the word unhappy.
Definition of inertia. 1a : a property of matter by which it remains at rest or in uniform motion in the same straight line unless acted upon by some external force. b : an analogous property of other physical quantities (such as electricity) 2 : indisposition to motion, exertion, or change : inertness.
Is inertia a passive or active property?
Inertia is a passive property and does not enable a body to do anything except oppose such active agents as forces and torques. A moving body keeps moving not because of its inertia but only because of the absence of a force to slow it down, change its course, or speed it up. Read More on This Topic.
Did Newton use the term inertia in his first law of motion?
Nevertheless, despite defining the concept so elegantly in his laws of motion, even Newton did not actually use the term “inertia” to refer to his First Law. In fact, Newton originally viewed the phenomenon he described in his First Law of Motion as being caused by “innate forces” inherent in matter, which resisted any acceleration.
How to measure the inertia of a body?
The inertia of a body can be measured by its mass, which governs its resistance to the action of a force, or by its moment of inertia about a specified axis, which measures its resistance to the action of a torque about the same axiss.