Science Chapter 7 Flashcards
Reference point
A place or object used for comparison to determine if an object is in motion.
Motion
The state in which one object’s distance from another is changing.
International System of Units(SI)
A system of units used by scientists to measure the properties of matter.
Speed
The distance an object travels per unit of time.
The speed equation
Speed: distance/Time
Average speed
The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.
Average speed formula
As: total distance/ total time
Instantaneous speed
The speed of an object at one instant of time.
Velocity
Speed in a given direction.
Slope
The steepness of a graph line; the ratio of the vertical change (the rise) to the horizontal change (the run).
Acceleration
Rate at which velocity changes.
Distance
Length of the path between two points.