NEWTON’S LAWS

First Law
If a balanced force system acts on a particle at rest , it will remain
at rest . If a balanced force system acts on a particle in motion, it will
remain in motion in a straight line without acceleration.
Secound Law
If an unbalanced force system acts on a particle, it will accelerate
in proportion to the magnitude and in the direction of the resultant.
Third Law
When two particles exert forces on each other, these forces are
equal in magnitude, opposite in direction, and collinear.