Newton’s Second Law of Motion states,
“The force acting on an object is equal to the mass of
that object times its acceleration.” (livescience).
This law is often defined as its mathematical
expression, F=ma; with standard SI units mass is
measured in kilograms (kg), acceleration is measured
in meters per second squared (m/s2), and
force is measured in Newtons (N) named after Isaac
Newton because of this law. According to Physics for
Scientists and Engineers: A Strategic Approach with
Modern Physics, “the object responds only to the
forces acting on it at this instant. The object has no
memory of forces that may have been exerted at earlier
times. This idea is sometimes called Newton’s Zeroth
Law.” (Knight, 2013, p.127). If there is a unbalance
of forces there is motion in that direction. The force
that is produced from the mass multiplied by the
acceleration is a push or pull that acts upon an
object as a results of its interaction with another
object, brings Newton’s observations of motion to his
third law.