Question

Newtons laws of motion
In brief

Answer 1

NEWTON'S FIRST LAW OF MOTION

Newton's First Law of Motion states that an object in motion tends to stay in motion unless an external force acts upon it.
Similarly, if the object is at rest, it will remain at rest unless an unbalanced force acts upon it. Newton's First Law of Motion is also known as the Law of Inertia.

Basically what Newton's First Law is saying is that objects behave predictably. If a ball is sitting on your table, it isn't going to start rolling or fall off the table unless a force acts upon it to cause it to do so. Moving objects don't change their direction unless a force causes them to move from their path.

As you know, if you slide a block across a table, it eventually stops rather than continuing on forever. This is because the frictional force opposes continued movement. If you threw a ball out in space, there is much less resistance, so the ball would continue onward for a much greater distance.

NEWTON'S SECOND LAW OF MOTION

Newton's Second Law of Motion states that when a force acts on an object, it will cause the object to accelerate.

The larger the mass of the object, the greater the force will need to be to cause it to accelerate. This Law may be written as force = mass x acceleration or:

F = m * a

Another way to state the Second Law is to say it takes more force to move a heavy object than it does to move a light object. Simple, right?

The law also explains deceleration or slowing down. You can think of deceleration as acceleration with a negative sign on it.

NEWTON'S THIRD LAW OF MOTION

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction.

What this means is that pushing on an object causes that object to push back against you, the exact same amount, but in the opposite direction. For example, when you are standing on the ground, you are pushing down on the Earth with the same magnitude of force that it is pushing back up at you.

Hope it helps
Regards
Krishi

Answer 2

first law of motion explains about that an object in rest or motion until a force act on it the state of motion of object or rest will not change

Second law of motion says that the rate of change of momentum is directly proportional to applied force I. e., F proportional to change in momentum /change in time

newton third law explain about that for every action there is a reaction