Question

Newton 2nd law explain and proof
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Answer 1

Answer:

Newton's Second Law of Motion States - =================================== The rate of change of momentum of a body is directly proportional to the applied force,& Takes place in the direction in which the force acts. Proof - Consider a body of mass m moving with velocity u....

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Answer 2

Answer: Newtons second law of motion states that the rate of change of momentum is directly proportional to the applied unbalanced force in the direction of force applied.

proof: rate of change of momentum∝ mv-mu/t

F∝ (mv-mu)/t

F∝m((v-u)/t)

we know that a= (v-u)/t

∴F∝ma

⇒F=k×ma (k is constant of proportionality)

the unit of force,i.e. , N or kg m/s is so chosen that the value constant of proportionality is 0.

∴F= ma

or

Force applied is the product of the mass of the object and its acceleration.