Question

what is second law of motion

Answer 1

Heya...
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Newton's second law of motion gives the relationship between the force and acceleration.
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The rate of change of momentum of an object is proportional to the applied force. So, Newton's second law of motion can be expressed as..in pic. attached above...

Answer 2

Second law of motion ================
The second law of motion, first derived by Isaac Newton, states that the acceleration of an object subject to a force is directly proportional to the net force, and inversely proportional to the mass of the object, or a=F/m, where a is the acceleration, F is the net force, and m is the mass. This equation can be rearranged to give the more familiar form F=ma. The greater the force applied, the greater the acceleration; the greater the mass of the object, the greater the force required to achieve the same acceleration. As force and acceleration are both vector quantities, the direction of the acceleration will be the same as the direction of applied net force.
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