Motion and Distance
How is motion defined in science?
Motion is defined as a change of position.
What is the definition of direction?
The location of something relative to something else.
What is speed?
How fast or slow something moves.
What is velocity?
A measure of both speed and direction of motion.
What is the definition of acceleration?
A measure of the change in velocity of a moving object.
How is distance defined?
Distance is the length of the route between two points.
What are the cardinal directions?
North, South, East, and West.
What is the SI unit for speed?
Meters per second (m/s)
What is the formula for velocity?
velocity = distance/time plus direction
What is the increase of acceleration called?
Positive acceleration
What is the SI unit for distance?
The SI unit for distance is the meter.
What is a vector?
A measurement that has both size and direction.
What is the formula of speed?
speed = distance/time
How does velocity differ from speed?
It is speed plus direction.
What is the decrease of acceleration called?
deceleration
What is the short and long SI unit for distance?
Short distances may be measured in centimeters (cm), and long distances may be measured in kilometers (km).
What is the symbol representing a vector?
It is represented by an arrow.
What is instantaneous speed?
Speed at any given instant.
A car travels northwest for 2 hours and covers a distance of 90 miles. What is the average velocity of the car?
45 mph Northwest
When calculating acceleration on a graph, which shows an increase of acceleration?
The line on the graph moves up?
What is the frame of reference?
Something that is not moving with respect to an observer that can be used to detect motion.
What does a compass show?
Cardinal directions, such as North, East, South, and West, on a map.
What is average speed?
Distance or time calculated by solving the average speed for distance or time.
A fighter jet flies North 500 miles in 30 minutes. What is the average velocity of the fighter jet?
1000 mph North
When calculating acceleration on a graph, which shows an increase of acceleration?
The line on the graph moves down?