can anyone explain me newtons first law....please help!!!

Question

anonymous · Answer

1.Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. 
2.The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors (as indicated by their symbols being displayed in slant bold font); in this law the direction of the force vector is the same as the direction of the acceleration vector. 
3.For every action there is an equal and opposite reaction.

anonymous · Answer

and the second law

anonymous · Answer

Newton's first law states the property of inertia of a body. The body continues it's current state of motion(at rest /moving with uniform velocity) unless it is acted upon by an external unbalanced force. Inertia is this property of a body to continue its state of motion and resist any change in its state of motion(resist acceleration on itself). Mass is the measure of inertia of a body. Greater the mass greater is the body's tendency to resist change in its state of motion(greater inertia). By logic if you push a 200 kg crate on a frictionless surface it will resist your effort to change its state of rest (You will produce a force F but since its mass is great its acceleration will be that much smaller). If you apply the same force F on a 500 grams ball it will move with a considerable acceleration and its resistance to your effort to change its motion will be minimal

anonymous · Answer

The second law states that the net force acting on a body produces an acceleration on the body along the direction of the net force. The magnitude of this net force is given by
F=ma 
 ( where m is the mass of body; a is the net acceleration along direction of force and F is the net force acting on body)

anonymous · Answer

ok thanks and please the third law

anonymous · Answer

The third law states that when one object exerts a force (action) on another then the second object exerts a force on the first object (reaction) which is equal in magnitude and opposite in direction to the first force