Question

What is mass?
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Answer 1

Mass, in physics, quantitative measure of inertia, a fundamental property of all matter. It is, in effect, the resistance that a body of matter offers to a change in its speed or position upon the application of a force. The greater the mass of a body, the smaller the change produced by an applied force.

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Answer 2

Explanation:

the number of molecules presence in a matter is known as mass