Newton's First Law of Motion
Newton's first law states that, "An object at rest tends to stay at rest and an object in motion tends to stay in motion with the same speed and direction unless acted upon by an unbalanced force."
This resistance to change in motion is called inertia. The more mass any given object has the more inertia it has therefore when the mass of an object increases the amount of force required to change its motion by a given amount increases. This allows one to solve equations for objects that are in equilibrium which means their motion is not changeing from this law we are able to calculate Forces and the angles at which they are applied for objects at rest or objects moving at constant velocity. For me the most difficult part of applying Newtons first law is figuring out which direction forces are applied and their resultants. So in order to over come this problem I worked problems and asked friends for help and now I understand them just fine
Newton's Second law of Motion states that "for a particular force, acceleration of an object is proportional to net force and inversly proportional to the mass of an object the direction of the force is the same as that of the accelration.
The more mass any given object has the more inertia it has therefore when the mass of an object increases the amount of force required to change its motion by a given amount increases. The proportion for this in SI units is a one kg mass requires 1N of unbalanced force to accelerate it at 1m/s^2. This information allows one to calculate accelertaion on objects given the forces applied to them and th mass of the object or the ability to calculate forces on the object given accelration and mass or to calculate mass given accelration and forces.
The most difficult part about applying Newton's second law for me is making sure I do the net force equations correctley. this is basically the same issue I had with hisfirst law and I solved it in a similar fashion.
Newton's Third Law of Motion
Newton's third law states that for every action there is an equall and oposite reaction
These forces never balance out because they act on different objects.
So the idea is that if one hits a wall with their hand, the wall hits their hand back. These types of reactions happen all around us all the time, in fact they happen for every action.
