Terms in this set (16)
Newtons first Law (inertia)
an object at rest remains at rest, and an object in motion remains in uniform motion unless acted upon by a net external force.
Newtons second Law (acceleration)
when a net external force acts on an object that object accelerates. The object's acceleration is in the direction of the net external force, is directly proportional to the size of the net external force, and is inversely proportional to the mass of the object
Newtons third Law (Action/Reaction)
When object A exerts a force on object B, object B exerts a force back on object A that is equal in size, but opposite in direction.
5 common forces
weight, applied force, normal force, frictional force, tension
the gravitational force exerted on an object by the Earth
generally used to mean a force purposefully applied to an object; can be a push or pull.
the force exerted by a surface on an object in a direction perpendicular to that surface.
a force that opposes the motion of an object as it moves (or attempts to move) over a surface; the force a fluid exerts on an object moving through that fluid.
the pulling force exerted by a string, rope, chain, etc. on an object
Two types of forces
A push or pull that arises when 2 objects interact with each other
A property of an object that causes it to resist changes in its motion.
the tendency of an object to continue in whatever state of motion it is in.
a property of an object that allows it to interact gravitationally with other massive objects.
frictional force of air on a falling object
is the fastest speed a falling object travels in air. Occurs when air resistance=weight
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