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Book M: Ch 2 Science

Study for Chapter 2 test on Wednesday

TermDefinition
orbiting an object traveling around another object in space
free fall the motion of a body when only the force of gravity is acting on the body
centripetal force the unbalanced force that causes objects to move in a circular path
gravity a force of attraction between objects that is due to their masses
inertia the tendency of an object to resist being moved or, if the object is moving, to resist a change in speed or direction until an outside force acts on the object
friction the force that opposes motion between two surfaces in contact
air resistance the force that opposes motion of objects through air
projectile motion the curved path that an object follows when thrown, launched, or otherwise projected near the surface of the Earth
The Law of Conservation of Momentum any time objects collide, the total amount of momentum stays the same
Newtons 1 Law an object at rest stays at rest and an object in motion stays in motion at constant speed and in a straight line, unless acted on by an unbalanced force
Newtons 2 Law the acceleration of an object depends on the amount of mass and force applied
Newtons 3 Law whenever one objects exerts a force on a second object, the second objects creates an equal and opposite reaction force on the first (action - reaction)
what motion does a snowball exhibit in the air projectile motion
what forces cause projectile motion horizontal and vertical motion
hand force on snowball = ??? horizontal motion
gravity pulling snowball down = ??? vertical motion
velocity (units) m/s + direction
gravity (units) m/s2 + direction
time (units) s
force (units) N or kg x m/s2
mass (units) kg
acceleration (units) m/s2 + direction
momentum (units) kg x m/s + direction
Created by: graceernst
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