what are the Newton's three laws of motion?

Answer 1

The fist law of newton is called the Law of Enertia=which say that all motion in the Universe is continuous.
That means the Universe is a dynamic system.(nothing is really at rest ) And what appears at rest is only relative.

The second law =say that When a moving mass interacts with space substance(Gravity field) a force is produced. That force equates to the product of the mass and its acceleration. The dimension of the force is= kg * m/sec^2 and its in Units of newtons.

The third law= says that when two massive heads collide, each head would experience the same magnetude of force but in opposite directions.
That means a force never exists by itself.

This sums up Newton's three laws of motion in simple terms.Hope you like it.

Answer 2

Newton's laws of motion describe the acceleration of massive objects. The modern understanding of Newton's three laws of motion is:

First Law
If no net force acts on a particle, then it is possible to select a set of reference frames, called inertial reference frames, observed from which the particle moves without any change in velocity.
Second Law
Observed from an inertial reference frame, the net force on a particle is proportional to the time rate of change of its linear momentum. Momentum is the product of mass and velocity. This law is often stated as F = ma (the force on an object is equal to its mass multiplied by its acceleration).
Third Law
Whenever a particle A exerts a force on another particle B, B simultaneously exerts a force on A with the same magnitude in the opposite direction. The strong form of the law further postulates that these two forces act along the same line.

In the given interpretation mass, acceleration and most importantly force are assumed to be externally defined quantities. This is the most common, but not the only interpretation: one can consider the laws to be definitions of these quantities. Notice that the second law only holds when the observation is made from an inertial reference frame, and since an inertial reference frame is defined by the first law, asking a proof of the first law from the second law is a logical fallacy.

Answer 3

1. An object in motion will tend to stay in motion unless an external net force acts upon it. (basically inertia)
2. Force equals the product of mass and acceleration (basically F = ma)
3. For every action there is an equal and opposite reaction (when you jump the Earth pulls you towards it by gravity, but you also pull the Earth towards you, although tiny it is).

Answer 4

1) the inertial rule- "matter likes to keep doing what its doing" ie without another force acting upon an object, it will continue to be stationary or continue to move never endingly (think: satellites orbitting the earth in a vacuum with no force acting on them)
2) Force= mass*Acceleration
3) With every action there is an equal and opposing reaction (think: when you press the acceleration down in a car, the friction from the road and air increases)

Answer 5

Actually, the second law is NOT force = mass * acceleration. Newton wrote that force = rate of change of (mass * velocity).

If mass remains constant, then F = ma. But if mass changes, like in a rocket blasting out exhaust, F = m*a + (rate of change of mass) * velocity.

Answer 6

...objects at rest "tend" to stay at rest. ...objects in motion "tend" to stay in motion. ...and every "force" has an equal and opposite force.