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12 terms

motion speed and velocity

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Frame of reference
is a system of objects that are not moving with respect to one another
Speed
is the ratio of the distance an object moves to the amount of time the object moves
Instantaneous speed
is computed for the entire duration of a trip, instantaneous speed is measured at a single moment., the speed of an object at one instant of time
Constant speed
speed that does not change
Average speed
a rate of motion determined by dividing the total distance traveled by the total travel time
Slope
the property possessed by a line or surface that departs from the horizontal
Velocity
distance travelled per unit time
Acceleration
The rate at which velocity changes
Deceleration
a decrease in speed
D-t graph
distance time graph
V-t graph
velocity time graph
Units for speed, acceleration, distance, velocity
m/s, m/s squared, m, mph, km/hr, m/s