Question

Write Newton's second law of motion and get the formula F = ma.​

Answer 1

Answer:

In equation form, Newton's second law of motion is a=Fnetm a = F net m . This is often written in the more familiar form: Fnet = ma. The weight w of an object is defined as the force of gravity acting on an object of mass m. ... Friction is a force that opposes the motion past each other of objects that are touching.

Explanation:

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Answer 2

Answer:

Explanation:

Concept:

According to the first law, until a force acts on an item, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects interact, they exert equal-sized and opposite-direction pressures upon one another.

Solution:

According to Newton's second law of motion, a body's force is inversely proportional to the rate at which its momentum is changing. When force "F" is applied to a body of mass "m," its velocity changes from u to v in time "t."

          $\begin{aligned}&\mathrm{F} \propto \frac{\text { Change in momentum }}{\text { Time }} \\\\&\mathrm{F} \propto \frac{\mathrm{mv}-\mathrm{mu}}{\mathrm{t}} \\\\&\mathrm{F} \propto \mathrm{m}\left(\frac{\mathrm{v}-\mathrm{u}}{\mathrm{t}}\right) \\\\&\Rightarrow \mathrm{F} \propto \mathrm{ma} \Rightarrow \mathrm{F}=\mathrm{kma}\left(\because \mathrm{a}=\frac{\mathrm{v}-\mathrm{u}}{\mathrm{t}}\right) \\\\&\Rightarrow \mathrm{F}=\mathrm{ma}(\because \mathrm{k}=\text { constant }=1)\end{aligned}$

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