what are Newton's three Laws of Motion?

Question

I need to know this for a project

Answer 1

Newton's First Law: If there are balanced forces, then there is a constant state of motion (either moving at a constant velocity, or sitting at rest). In addition, it is harder to change the motion of more massive objects due to the fact that they have more inertia.

Newton's Second Law: If there are unbalanced forces, then objects will undergo a change in motion (acceleration). This change in motion could be speeding up, slowing down, or changing direction. The acceleration is directly proportional to the net force and inversely proportional to the mass of the object.
Equation - a= Net Force/ Mass

Newton's Third Law: If object A exerts a force on object B, then object B will exert a force of equal magnitude in the opposite direction on object A.

Answer 2

Newton's first law:
An object will remain at rest or travel at a constant velocity, provided that no external forces are acting

Newton's 2nd law:
the formula F=ma
f= force
m= mass
a= acceleration

Newton's 3rd law:
If body A exerts a force on body B, body B will exert an equal and opposite force back onto body A

hope that helps :)

Answer 3

Hi. This explains them. http://csep10.phys.utk.edu/astr161/lect/history/newton3laws.html