Science Flashcards
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Frame Of Reference
a system of objects that aren’‘t moving with respect to one another
Compare and Contrast distance and displacement
Distance is the length of the path between 2 points while displacement measures both distance and direction
How are displacements combined?
Using vector addition, when they are facing the same way they add, opposite ways, they subtract
Displacement or Distance for a coiled rope
Distance is more like a coiled rope because if a lines curved it cant represent displacement (the shortest length from starting point will always be straight)
kilo means 1000, would you use them to measure distances between towns?
yes
If your telling someone where to go tell them steps in distance because you don’‘t know if the towns a straight line away
True
Relative Motion
Movement in relation to a frame of reference
The length of the path between 2 points
distance
Vector
a quantity that has both magnitude and direction
resultant vector
the vector sum of two or more vectors
the ratio of the distance an object moves to the amount of time an object moves (slope on DT graph)
Speed
Computed for the entire duration of a trip
average speed
Speed measured at a particular instant
instantaneous speed
the speed and direction in which an object is moving
velocity (describes both speed and direction of motion)
Compare Average and instantaneous
Average speed is measured throughout the whole trip while instantaneous is a particular instant (speedometer)
Average Speed Formula
Total Distance divided by Total Time
Speed is the slope on a distance time graph because the rate of change over rate of time
true
when needed to find total Distance of a trip multiply the miles per hour to how long the trip is
true
T or F: A starting point is a frame of reference
T
Displacement
Distance and direction
SI unit for distance
meter
for larger distances such as a town it would be KM and smaller than a meter, CM
which can be magnitude
size, length, and amount
v with a line over it means what
average speed (total d over total t)
Vf=
Final Velocity
