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Astro test 2
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Newton's First Law: Law of Inertia
Objects will remain in motion, in a straight line and at a constant speed unless acted upon by a force
Net force
any influence that may change the state of motion of objects
an unbalanced force
Newton's 2nd Law: Law of forces and accelrations
if ourside net forces act upon objects, then objects are accelerated.
when this happens objects are accelerated in the direction of the net forces.
inversely proportional to objects inertia
quantitive measurement of inertia
objects mass
mass
total amount of material in an object
acceleration
force/mass
force=mass * acceleration
weight
how gravity affects or accelerates mass.
scalar quantity
remains the same no matter where you travel in the universe
MASS
vector quantity
changes depending on where you are.
weight
inertia
the tendency of the object at rest to remain at rest. and of a body in motion in a straight line at a constant speed.
Force
push or pull anything that can cause a body to change velocity.
velocity
a physical quantity that indicates both the spped of a body and the direction in which it is moving.
Newston's 3rd Law: law of active-reactive forces
if an ovject exerts a net force upon another object (action), then the second object exerts a second net force upon the first object (reaction)
the two forces are equal in magnitude but opposite in direction.
f1=f2
The relationship between acceleration and forces
if an outside net force acts upon an object, the object is accelerated in the direction of the net force
light
Author
vpenaloza23
ID
11040
Card Set
Astro test 2
Description
Astro Test 2
Updated
2010-03-18T01:15:36Z
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