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19 terms

Phys Sci Ch 11.1 Measuring Motion

STUDY
PLAY
motion
a change in position relative to reference point
frame of reference
a way to show precise location of object in space, time is:
displacement
measures distance between start and end point
speed
how fast object moves in a given time
v=d/t
what is the formula for average speed?
d=vt
what is the formula for distance?
t=d/v
what is the formula for time?
velocity
what is the speed of an object in a direction called?
positive velocity
velocity of an object when it moves toward reference point
negative velocity
velocity of an object when is moves away from reference point
resultant velocity
addition of positive and negative velocities is called:
constant speed
what speed is the speed when distance and time are equal?
meters/second
what is the SI unit for speed?
distance-time graph
the graph that shows speed of an object
speed
what does the slope of a distance-time graph show?
fast
if the slope on a distance-time graph is steep is the object travelling fast or slow?
Zero Slope
what is the slope of an object thats not moving
distance, y axis
what is the independent variable on a distance-time graph and which axis is it on?
time, x axis
what is the dependent variable on a distance-time graph and which axis is it on?