Vocab Test for 1/21/2017- Forces and Newton's law VOCAB
Terms in this set (26)
a push or pull acting on an object
the force acting on an object due to the combination of all forces acting on an object
is the force needed to cause a mass of 1 kilogram to accelerate
a force that opposes motion between surfaces that are touching
acts on object when they are resting on a surface
is friction that acts on objects when they are sliding over a surface
is friction that acts on objects when they are rolling over a surface
is a substance that can flow and take the shape of its container
Fluids liquid and gases
a force of attraction between things that have mass
Law of universal gravitation
Newton was the first one to suggest that gravity is universal and affects all objects in the universe.
Newton law of gravity is called-----------------
is a change in velocity and velocity in turn is a measure of speed and direction of motion.
Newtons first law of motion
an object at rest will remain at rest and an object in motion will stay in motion unless it is acted on by an unbalanced force
is the tendency of an object to resist a change in it's motion.
Newtons second law of motion
the acceleration of an object equals the net force acting on the object divided by the object mass
is a measure of the force of gravity pulling down on an object
Newtons third law of motion
every action has an equal and opposite reaction
property of a moving object that makes it hard to stop. dependent on its mass and velocity.
law of conservation of momentum
the total momentum of any closed system is constant as long as there are no outside forces.
movement of an object along a circular path
a force that makes a moving object follow a curved path
when the downward force of gravity combines with a forward motion, it results in a curve
how fast or slow an object moves, determined by the distance it moves in a given amount of time
straight line motion
when an object moves from one point to another in straight line
measurement that includes both size and direction
the measure of both speed and direction
rapid back and forth movement of an object in one place
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