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Transcript of Newton
Law of Inertia Newton's
Law of Acceleration Newton's
Law of Action & Reaction An object at rest will remain at rest unless acted on by an unbalanced force. An object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force is needed (to accelerate the object). For every action there is an equal and opposite re-action. Basically, an object continues what it has been doing.
If it was moving, it'll stay moving. If it's at rest, it'll
stay at rest. The only thing that can change it is an
unbalanced force. Another example is rolling a ball. If you don't roll the ball, the ball will never move. Yet if you roll a ball on a frictionless surface, the ball will never stop. The only reasons the ball changes its speed or direction is because of an unbalanced force. One example of newton's law of inertia is a moving car. If a car is out of gas, it wont be able to move. That is because there is no force to get the car started. If a car is driving on an icy road at a constant speed, it will continue moving until there is an unbalanced force that can stop or change the direction or speed of the car. This law states that if a force is going in one direction, there is another one going in the opposite direction and equal in size Another example is releasing the air out of a balloon. When the air is released, it goes down, forcing the balloon to go up. One example of this law is putting two positive magnets next to each other. As everybody knows, positive and negative attract. But, positive and positive or negative and negative repel. Therefor, if two positive (or negative) magnets are put next to each other (that's the action), the reaction is they repel each other. In other words, the greater mass equals the greater amount of force needed to move an object. Another example is pushing an elephant. If you're pushing a big, fully grown, 2 ton elephant, you'll need at least 2 tons of force to move it. But if you're pushing a small, new born, 25Ibs elephant, you'll use a less amount of force than trying to push a fully grown one. One example of Newton's law of acceleration is opening a door. If you are opening a very heavy door, you'll use more force doing so than opening a more light-weight door.