1. Newton's second law of motion helps to determine:
(a) Magnitude of force
(b) Definition of force
(c) Magnitude of velocity
(d) Definition of velocity
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a) Magnitude of force
It is sum of all forces acting on a body.
b), force
force is any interaction that, when unopposed, will change the motion of an object. ... Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newton (N).
c) magnitude of velocity
The scalar absolute value (magnitude) of velocity is called speed, being a coherent derived unit whose quantity is measured in the SI (metric system) as metres per second (m/s or m⋅s−1).
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