Show:
motion
speed/velocity
solve
acceleration
misc.
100
the state in which one's position changes relative to another object
motion
100
the distance an object moves per unit of time
speed
100
the steepness of a line on a graph
slope
100
the rate at which velocity changes
acceleration
100
where does time always go on both a distance-vs-time graph and a speed-vs-time graph?
x-axis (at the bottom)
200
a place or object used for comparison to determine if something is in motion
reference point
200
how do you calculate average speed?
divide the total distance traveled by the total time
200
The rise of a line on a distance-versus-time graph is 900 m and the run is 3 min. What is the slope of the line (label)?
300 m/min
200
When you slow down at a red light, are you accelerating? Explain.
yes, because you are changing speed
200
what is the SI unit for average speed?
m/s
300
the length of the path between two points
distance
300
the speed at which an object is moving at a given instant in time
instantaneous speed
300
The slope of a distance-versus-time graph shows you the ___________ of a moving object.
speed
300
If you are traveling at a constant speed of 70 mph North on I-55, are you accelerating? Explain.
No, because you are not changing speed or direction
300
What does a horizontal line on a distance-vs-time graph tell you?
the object is not moving at all
400
how many millimeters are in one meter
1000 (one thousand)
400
speed in a given direction
velocity
400
Is it possible for a distance-vs-time graph to be a vertical line? Explain.
No, because it is impossible to travel a distance in no time.
400
A roller coaster accelerates from a speed of 2 m/s to 22 m/s in 5 second. What is the average acceleration of the ride? ave accel = final speed - initial speed/time
4 m/s/s
400
What does a downward slope tell you on a distance-vs-time graph?
the object is returning to where it started
500
are you moving?
It depends on your reference point. If the sun is my reference point, then I am moving, but if the desk/chair is my reference point, I am not moving.
500
In the story of the Tortoise and the Hare, who had the fastest average speed and who had the fastest instantaneous speed and explain.
The tortoise had the fastest average speed because he won the race. The hare had the fastest instantaneous speed because he could be faster at any given instant.
500
Ted traveled south at a distance of 800 m in 4 minutes. What was Ted's velocity?
200 m/min South have to give both speed and direction
500
What does a straight line on a distance-vs-time graph tell you?
the object is traveling at a constant speed
500
What is the SI unit for average acceleration?
m/s/s