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Gravity
section 1,2,3 of notetaking
Terms in this set (32)
motion
all mater is constantly in___
change
motiong involves a___ in position
reference
an object changes position relative to a ___ point
distance
___is the total length of the route an object travels when it moves
displacement
___ includes distance and direction of the stopping point from the starting point
speed
distance traveled divided by the time taken to travel the distance is called___
speed
the formula for ___ can be written as: S= D/T
meters per second
the units of speed are units of distance divided by unit of time; in SI units, speed is given as ___ (m/s)
speeds
an objects in motiong can change ___ many times as it moves from one point to another, speeding up or slowing down
average speed
___is the total distance traveled divided by total time take
instantaneous speed
an object's speed at a particular moment in time is called___
constant
___speed occurs when an object travels at a steady rate with the same instantaneous speed for some period of time
graphed
motion can be ___ on a distance-time graph with time plotted on the horizontal speed for some period of time
speed
the steeper the line on a distance-time graph, the greadter the ___
position, zero
a horizontal line on a distance-time graph indicates that no change in___ is occurring, and the speed is___
velocitiy
___-speed of an object and its direction of mottion; velocity changes if either, or both, of these changes
acceleration
____- change in velocity divided by the time for the change to occer; it can include an object's speeding up, slowing down, and/or changing direction
calculated
acceleration can be___if you know how an object's velocity has changed during a given time period
acceleration
the formula for calculationg___ is: acceleration= final speed +nitial speed/time
meters per second per second
the unit of acceleration is distance divided by time squared; in SI units, acceleration is given as ___
positive, negative
acceleration is___ when an object speeds up and ___ when an object slows down
upward
an object that is speeding up will have a line on a speed-time graph that slopes ___
downward
an object that is slowing down will have a line on a speed-time graph that slopes___
zero
a horizantal line would indicate acceleration of___, or constant speed
inertia
the amount of matter in an object is its MASS; ___ is the tendency of an object to resist a change in its motion
momentum
___-measure of how hard it is to stop an object; calculated as mass times velocity
momentum
with___ expressed as p, the equation can be written as: P=m times v
law of conservation of momentum
___the total momentum of objects that collide with each other does not change
many
there are___ ways collisions can occur
move
in one type, objects stick together and ___ still stuck together, although possibly at different speeds
momentum
in anouther type, two objects bounce off each other when they collide, and may transfer ___from one to the other
total
in both cases, the ___ momentum of the objects that collide is the same before and after the collision
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