Zusammenfassung der Ressource
Motion
- Speed
- Formula
- Speed is Distance over Time D/T
- The Average Speed
- The total distance traveled divided by the total time
- Instataneous speed
- The rate of an object when it is moving at a given time
- Velocity
- Definition
- The Speed and Direction of the objects movement
- Important for
- Airplane pilots
- To not collide with other aircrafts
- Landing the plane
- Citizens
- In case of a Twister (hurricane, Tornado etc.)
- Reference Point
- An object that determines if you are in motion or
not
- Tree
- Sign
- Pole
- Building
- Sometimes it is hard to determine if you're moving if your
reference point is a moving object too. For example when
your reference pint is another moving object it is difficult to
determine if you are in motion if the object is also in motion
- Acceleration
- Definition
- The rate of which velocity changes
- Increasing Speed
- A train that moves from a stopped position
- A volleyball that is served from the server
- Decreasing Speed:
aka Deceleration or
negative acceleration
- When an object slows down
- The volleyball decelerates when it is caught
- Changing Direction
- When the object curves, goes left or right.
- Formula
- The Initial speed subtracted by The final speed divided by time (Final speed - Initial speed/ Time
- Graphing Acceleration
- Time as your x axis and speed as your y axis
- If the graph is pointing upwards
(steep) it means the speen is
increasing
- If the graph is a straight line it
means the acceleration was at a
constant speed
- Time as your x axis and distance as your y axis
- if the graph shows a curved line it means the object is
accelerating
- means that you traveled a greater
distance during the third than you
did in the first and second
- Graphing motion
- Formula for slope
- rise over run
- plot points when the x axis is time and y axis is y
- these points turn into a slope
- slope determines how fast a
variable changes compared to
the other points on the graph