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Terms in this set (21)
The tendency of an object to resist a change in motion.
When two surfaces exert on each other when they rub against each other.
A push or a pull.
The amount of matter in an object.
A force that pulls objects toward each other.
The combination of all forces acting on an object.
Example of Force:
Somebody sliding a rock across a table.
If two forces act in the same direction:
A larger net force develops.
Newtons First Law:
An object at rest will remain at rest and an object moving at a constant velocity will continue to move at constant velocity unless it is acted upon by an unbalanced first.
Newtons Second Law:
Force = Mass x Acceleration. The higher the mass of an object, the less it will accelerate.
Newtons Third Law
If one object exerts a force on another object then the second object exerts a force of equal strength in the opposite direction on the first object.
Example of First Law
If a rock is on a table and no force is applied, the rock remains at rest.
Example of Second Law
If a baby is in a stroller and the mom pushes the stroller, the stroller will be able to accelerate more than if a baby was pushing the mom with the same amount of force. This is because the mom has a higher mass than the baby.
Example of Third Law
Rocket ship goes up into the sky. Action force is the gasses releasing from the rocket ship. Therefore the reaction force is the rocket ship going into the sky.
Unit for force:
What happens to an object that has balanced forces acting upon it?
The objects motion does not change. When equal forces are exerted in opposite directions, there is no net force.
What happens to an object that has unbalanced forces acting upon it?
When this happens, it results in a net force and the objects motion does change.
How is a force represented?
By its strength and the direction in which the object acts towards the force.
What does the head of the arrow represent?
The arrow represents the direction that the force is being applied.
What does the length of the arrow represent?
The length of the arrow represents how much force is being applied.
How does the change in variables impact Newton's Second Law.
If two boxes have the same mass however one receives a greater force, the box with the greater force will accelerate more. If two boxes have different masses however are applied the same amount of force, the box with a fewer mass will accelerate more.
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