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Newton's Second Law
Newton's Second Law
Isaac Newton's Second Law of Motion describes how the force applied to an object is equal to the object's mass times the acceleration in which it moves. This rule can be described as the equation "F=ma." The "F" stands for the force applied to the object, while the "m" and "a" stand for the mass of the object and its accleration. The equation is formatted so that the mass and acceleration are to be multiplied.
How does it work?
How does it work?
If you were to use more force on an object, the acceleration would increase. This is because in a multiplication equation (F=ma), increasing one side directly increases the other in order to balance them. If the mass of an object increased while the force applied stayed the same, the acceleration would decrease. This is because in a division equation (a=F/m), increasing the divisor causes the quotient to decrease.
Newtons Three Laws
Newton's First Law
Newton's First Law
Newton's First Law is called the law of inertia. This law states that any object not in motion will stay still and every object in motion will stay in motion unless an unbalanced force acts upon them.
Newton's Second Law
Newton's Second Law
Newton's Second Law is called the law of force and acceleration. This law states that an object's acceleration is dependent on the force applied to it divided by its mass.
Newton's Third Law
Newton's Third Law
Newton's Third Law is called the law of action and reaction. This law states that every actions has its equal and opposite reaction and that forced always come in pairs.
Inertia
Inertia
Inertia is an objects tendency to resist motion. Inertia is dependent on mass, with more mass meaning more inertia.
Example of Newton's Laws
Example of Newton's Laws
An example of all three of Newton's laws is riding a scooter.
When you're not using it, the scooter stays still because all the forces acting on it are balanced. Once you start to move it, you are applying an unbalanced force which causes it to move.
First Law
When you push your foot against the ground to get the scooter to move, you are applying force. This force is divided by the mass of both you and the scooter. The quotient of this equation is the acceleration of the scooter.
Second Law
When you push your foot against the ground to get the scooter to move, you are applying a backward force against the ground. The ground reacts with an equal and opposite force that pushes you and the scooter forward.
Third Law
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