(F=ma, Force=mass X acceleration)
Newton's Second Law of Motion states that the acceleration of an object depends on the mass of the object and the amount of force applied. This explains why some people can swim faster than others. For example, if two people have the same mass and pushed off a wall and did not take any strokes, the person who used the most force pushing off the wall goes farther. Acceleration in this case was greater for the person who produced the greater force because the masses were equal to each other. Take the same two people and have them race to the other side of the pool the person who wins the race would have to create more force the whole time in order to maintain the lead. Greater force produced by a person with smaller mass will have the largest acceleration.
Newton's second law is represented by the equation F = ma, which indicates that force is directly proportional to mass and acceleration.
F=ma Input: newtons second law at wolframalpha.com
Its a matter of being scientifically rigorous. You can not claim the 2nd law as a law unless you first establish the first law.
its not importsnt
This is because two concepts are derived from the newtons second law. First : Force . F = m * a Second : momentum .. p = m * v
the second law
The clue is in the question.
For every action there is an equal and opposite reaction.
It isn't closely related. Newton's Third Law is more closely related to conservation of MOMENTUM.
Actually, the first one is completely independent on the second one. But the second one doesn't make any sense without the first one.
Every single object that exists obeys ALL of Newtons Laws
i think its because you give something out and you get something back in return.