force and motion

Newton's Laws

Newton's three laws of motion are called Inertia, F=ma, and Action, Reaction. Newton's first law states that an object will move forever unless there is an opposing force AKA inertia. The second law states that force, mass, and acceleration all affect each other. Newton's 3rd law states that every action has an equal opposite reaction. Inertia is the resistance of an object to change its motion. An object with greater mass will have greater inertia. For Newton's First Law, inertia keeps an object at rest or in motion, like a ball on a table that stays put until pushed. For Newton's Second Law, a force is required to change an object's velocity (acceleration), where inertia resists this change; for example, it's harder to start a heavy cart moving than a light one. For Newton's Third Law, inertia relates to the equal and opposite reaction, such as when a car hits a wall, both the car and wall exert an equal and opposite force on each other.

Newtons 2nd Law

Newton's second law is how acceleration, mass, and force affect each other. The equation for this law is F = m*a this means that the weight of an object and how fast you need to push it will affect the amount of force you need to use. If you use more force on an object the acceleration will increase. If mass increases while force stays the same, acceleration decreases.

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