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.

Answer 2

Answer:

• Newton's second law - Newton's second law provides a precise explanation of the modifications that a force can make to a body's motion.

• According to this, a body's momentum changes at a rate that is equal to the force acting on it over time in both magnitude and direction.

Force ∝ $\frac{Change \ in \ momentum}{Time}$

And momentum (P) = mv

Change in momentum = (mv - mu ) and Time = t

Therefore, Force ∝ $\frac{mv - mu }{t}$

Take m as common,

⇒ Force ∝$\frac{m(v - u)}{t}$  

⇒Force ∝ ma

 [where a is the acceleration, a = $\frac{change\ in\ velocity}{time \ taken}$ = $\frac{v - u}{t}$]

Force = k ma , put k = 1

Therefore , Force = ma.

Hence,  formula of Newton's second law of motion , F = ma.

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