Guide of Newton’s 3 Laws of Motion

Looking for a simple explanation becomes impossible when studying Newton's Law of Motion. What if you could access an easy way of learning Newton's law to get your science homework help?

So, let's decode the truth of Newton's Law of motion, and you can get references to  science homework help.

Newton's First Law: Inertia

As per Newton, an object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line unless acted on by an unbalanced force.

This tendency to resist changes in a state of motion is inertia.

Examples of Inertia -

The motion of an aeroplane when a pilot changes the throttle setting of an engine.

The movement of a kite when the wind changes.

Newton's Second Law: Force

The acceleration of an object depends on the mass of the object and the amount of force applied.

Newton's second law defines a force as equal to a change in momentum (mass times velocity) per change in time. Here, momentum is defined as the mass 'm' of object times its velocity 'V'.

You can denote the second law of motion as - F = m * a

Examples of Force-

A nice example of this law of motion in action is when you are riding your bicycle. Your bicycle is the mass. Your leg muscles generate the force as they press against the bicycle's pedals. Your bicycle speeds up as you apply pedal pressure. By pushing down on the pedals, you are accelerating the bicycle.

Newton's Third Law: Action & Reaction

Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first. Here, Newton's third law states that for every action (force) in nature, there is an equal and opposite reaction. If object A exerts a force on object B, object B also exerts an equal and opposite force on object A. In other words, forces result from interactions.

Examples of Action and Reaction

In the motion of lift from an airfoil, the air is deflected downward by the airfoil's action, and in reaction, the wing is pushed upward.

In the motion of a spinning ball, the air is deflected to one side, and the ball reacts by moving in the opposite.

The mentioned explanation can guide you a long way. Happy learning!

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Source :Guide of Newton’s 3 Laws of Motion

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