Newton's Law's Of Motion

Newton's First Law of Motion: the Law of Inertia
An object will continue in a state of rest, or uniform motion in a straight line at constant velocity, unless an unbalanced external force causes it to change the state.
inertia is a property of any object. it involves both the amount of motion (velocity) and the mass content ( mass of an object).
the law of inertia is simply the statement that any object resists any change in its state of motion or state of rest if not moving.
the degree of resistance an object offers to a change in motion is directly proportional to the mass of the object. it is much easier to move a 1 kg mass than it is to move a 100 kg mass. this is because 100 kg has more inertia. to move each vehicle, you have to overcome its inertia. because the 'motorcycle' has less mass it has less inertia.

Newton's Second Law Of Motion:
an unbalanced external force will change an objects state of motion by producing an acceleration. the force is equal to the product of the mass and acceleration of the object.
force (net) = mass x acceleration.
f net = ma
m = mass in kilograms (kg)
a = acceleration in metres per second
fnet = net (unbalanced) fore, which produces the acceleration in newtons.


Newtons Third Law of Motion:
for every action (force) of an object, there is an equal and opposite reaction by the object upon the agent (for every action done by an object, the object that had just been placed with this action will exert an equal and opposite reaction back open the object). when you walk, your foot pushes on the ground while the ground pushes upward on your foot, the two forces being equal and opposite.
forces always come in pairs. important points to remember in relation to netwon's third law are that the two forces, the action and reaction force, are both equal and opposite, and they are acting on different objects.