Physics LAWS OF MOTION

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LAWS OF MOTION

Inertia

Inertia is a word we use when we talk about matter and movement. Inertia is the resistance of any physical object to any change in its state of motion; this includes changes to its speed, direction or state of rest. It is the tendency of objects to keep moving in a straight line at constant velocity. Basically, our idea of inertia goes back to Sir Issac Newton's laws of motion:

a. An object at rest tends to stay at rest.
b. An object in motion tends to stay in motion.

If you want to overcome inertia, you have to apply a force. A force will make something that is still start to move, like flicking a wad of paper with a pencil will make it move. Also force, due to resistance, will slow or stop something that is already moving. The wad of paper will be slowed by resistance made by rubbing up against the air it is passing through.

Inertia is a word we use when we talk about matter and movement. Inertia is the resistance of any physical object to any change in its state of motion; this includes changes to its speed, direction or state of rest. It is the tendency of objects to keep moving in a straight line at constant velocity. Basically, our idea of inertia goes back to Sir Issac Newton's laws of motion:

a. An object at rest tends to stay at rest.
b. An object in motion tends to stay in motion.

If you want to overcome inertia, you have to apply a force. A force will make something that is still start to move, like flicking a wad of paper with a pencil will make it move. Also force, due to resistance, will slow or stop something that is already moving. The wad of paper will be slowed by resistance made by rubbing up against the air it is passing through.

Force

A force is any interaction that, when unopposed, will change the motion of an object. In other words, a force can cause an object with mass to change its velocity i.e., to accelerate. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol `F`.

The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object

A force is any interaction that, when unopposed, will change the motion of an object. In other words, a force can cause an object with mass to change its velocity i.e., to accelerate. Force can also be described by intuitive concepts such as a push or a pull. A force has both magnitude and direction, making it a vector quantity. It is measured in the SI unit of newtons and represented by the symbol `F`.

The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time. If the mass of the object is constant, this law implies that the acceleration of an object is directly proportional to the net force acting on the object, is in the direction of the net force, and is inversely proportional to the mass of the object

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