# I How was F = ma obtained?

#### Fernando Rios

How was F = ma obtained? What is mass? If you say mass is amount of matter, then what is matter? How did they measure accelerations at that time?

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#### HallsofIvy

Homework Helper
Your first question requires the second. Typically, mass is defined as "resistance to a change in motion": the more force require for acceleration then greater the mass: m= f/a from which f= ma immediately follows.

#### Fernando Rios

Your first question requires the second. Typically, mass is defined as "resistance to a change in motion": the more force require for acceleration then greater the mass: m= f/a from which f= ma immediately follows.
Thank you for your reply. So, in the experiment what was measured and how was it measured?

#### russ_watters

Mentor
How was F = ma obtained?

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