19 terms

# Science Test chapt 10

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A measure of the force of gravity on an object
weight
a force that opposes motion
friction
motion of a falling object when the only force acting on the object is gravity
free fall
force that pulls objects towards eachother
gravity
force that causes objects to move in a circular motion
centripetal force
the fluid friction expierienced by objects falling through the air
air resistance
for every action there is an equal and opposite reaction
action/reaction forces
the amount of particles in an object
Mass
the total momentum of any group of objects remains the same or is conserved unless acted upon by an outside force
conservation of momentum
causes air borne objects to follow a curved path because they move forward while gravity brings them down
projectile motion
the total amount of force acting on an object
net force
cause motion in objects to stop
balanced forces
cause objects to start stop or change direction
unbalanced forces
when an object moves through a fluid
fluid friction
when an object rolls over a surface
rolling friction
when 2 solid objects slide across each other
sliding friction
an object at rest will remain at restunless acted upon by an unbalanced force and an object moving at a constant velocity will continue moving at a constant velocit, unless it is acted upon by an unbalanced force another name is Law of Inertia
Newton's first law of motion
An objects mass and the amount of net force acting on the object contribute to how much an object can accelerateIe
Newton's second law of motion
one object exerts a force on another object then the second object exerts an equal force in the opposite direction of the first object
Newton's third law of motion