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Science explorer


What is rolling friction? When an object rolls accross a surface
What is friction? the force that one surface exerts on another when the two surfaces rub against each other
SI Unit of force-newton
Weight the force of gravity on an object at the surface of a planet
inertia the tendency of an object to resist any change in it's motion
freefall a motion of a falling object when the only force acting on it's gravity
momentum the product of an objects mass and veloctity
satallite any objsect that orbits around another object in space
centripetal force a force that couses an object to move in a circle
force a push or pull exerted on an object
velocity speed in a given direction
Static friction friction that acs on objects that are not moving
sliding friction friction that occurs when one solid surface slides over another
fluid fraction friction that occurs when an object moves through fluid
gravity the force that pulld objects toward each other.
two factors that affect the gravitational pull between objects mass and distance
net force the combination of all the forces acting on an object.
unbalanced forces can caouse an object to start moving, stop moving, or cange direction
air resistance the fluid friction experienced by objects falling through the air.
terminal velocity greatest velocity a falling objects reaches
projectile an object that is thrown
newtons first law of motion an object at rest will remain at rest, and object moving at a constant velocity will continue moving at a constant velocity, unbless it is acted uopn by an unbalanced force
newtons second law of motion acceleration depends on the object's mass and the net force acting on the object.
acceleration= = net/force
newtons third law of motion if one object exerts a force on another object, then the second objects exerts a force of an equal strength in the opposite direction on the first object
momentum= = mass x velocity
laws of conservation in an absence of outside forces, the total momentum of objects that interact does not change.
total momentum any group of objectsremain the same, or is conserved unless outside forces act on the objects
Created by: lelemsis