Question

prove that Newton's second law of motion is real law of motion​

Answer 1

Answer:

Newton's second law of motion states that the force is directly proportional to momentum.

So in real life if you take two balls of same size but one much more heavier than the first one as for example take the first ball to be a cosco ball and the second ball to be a metallic ball.

Now throw both of them one by one on your friend be careful while throwing.

Now you will clearly understand that the metallic ball exerts a greater force than a cosco ball and also pains much and do remember to throw both of them with the same velocity . And this proves the second law of motion.

Hope it helped.

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Answer 2

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \boxed{ \textsf{ \large{f = ma}}}$

For an Isolated system, External force is 0.

$\longrightarrow \textsf{f = 0} \\ \\\longrightarrow \sf{0 = ma} \\ \\ \bigstar \: \: \: \sf{a = 0}$

0 acceleration shows, there is no change in motion in the body and if it is at rest will remain at rest (which is Newton's first law ) . Thus, we can say Newton's second law is the real law of the motion.