science

Question Answer
speed distance over time
acceleration final velocity-intial velocity over time
force mass times acceleration
work forcer times distance
mechanical adv. outputforce over input force
Newton's first law of motion objects at rest remain at rest and objects
in motion will stay in motion with the same velocity, unless acted on by an
unbalanced force
Newton's second law of motion the acceleration of an object increases with increased force and decreases with increased mass
Newton's third law of motion everytime one object exerts a force on another object the second object exerts a force that is equal in size and opposite in direction back on the first object
mass is the number of particalesin an object
weight measure of force of gravity changed by location
inertia the resistance of an object to change in the speed or the direction of its motion
air resistance a type of fluid friction experienced by objects falling through the air
balanced forces equal force of opposite directions acting on an ibject that doesn't cause motion
unbalanced forces unequal forces which cause and object to move or to have motion
velocity speed plus direction
inclined plane ramp
wedge door stop
wheel/axel screwdriver
screw spiral staircase
pulley block-and-tackle
1st class lever carjack
2nd class lever weelberow
3rd class lever axe
three types of friction 1.sliding 2.rolling 3. fluid
terminal velocity the maximum velocity of an object falling when the air resistance equals gravity

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