Question

explain the second law of motion by newton

Answer 1

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Answer 2

According to Newton's second law of motion, when a force is applied to a body at rest then it is set in motion. There is a change in velocity and so, there is change in the momentum.

Thus, we derive that the rate of change of momentum is directly proportional to the applied force and takes place in the mentioned direction of the force.

This law helps us to measure the force. And we get the formula for force as F=ma, where F is the force, m is the mass and a is the acceleration of the body.