Question

Define Second law of motion and write equation for it.

Answer 1

Explanation:

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Answer 2

Answer:

Newton's Second Law of Motion

It states that the rate of change of momentum of a body is directly proportional to the applied force and takes place in the direction in which the force acts.

Mathematical formulation of Newton’s Second Law of Motion:

Let mass of an moving object be m.

Let is initial velocity be u and final velocity be v.

We know that momentum (p) = Mass × velocity

Therefore,

Initial momentum of object = mu

And Final momentum of the object = mv

Therefore, change in momentum = mv – mu

JagranjoshWhere k is the proportionality constant

, 1 unit force is defined as the force applied on an object of mass 1kg to produce the acceleration of 1m/s2.

Thus, 1 unit of force = k ×1kg ×1m/s2

⟹ k = 1

By putting the value of k=1 in equation (ii), we get:

F = ma

i.e., Force = Mass × Acceleration