Average Speed
What is Average Speed?
an average of all speeds over a given time.
What is Acceleration?
a change in speed or velocity over a specific amount of time.
What is Velocity?
Speed in a given direction.
What is speed?
The change in distance over a specific amount of time.
What is the formula for Average Speed?
Average speed = total distance / total time
What are examples of acceleration?
Speeding up, slowing down, or a change in direction.
V = s + direction
V = d/t + direction
Speed = distance / time
S = d/t
How do you find average speed with 2 distances and 2 times?
d1 + d2 / t1 + t2 = average speed
Acceleration = Speed / time
What indicates velocity in one direction on a Distance- Time Graph
Diagonal line going up
What represents no speed on a Distance-Time Graph?
A plane flies from New York City to San Diego, in 8 hours. The distance it was traveled 2,759 miles. What was the average speed of the plane?
A = total distance / total time
2,759 / 8 = 344. 86 mph
Increased acceleration cures which way?
Upward
What are Velocity Units?
Measure in units of distance, time, and direction
Examples:
Miles per hour, north, mi/hr north
Constant Speed.
A = total distance/ total time
Total distance = 3 x 60 + 5 x 70 = 530 miles
Total time = 3 + 5 = 8 hours
530 / 8 = 66.25 mi/hr
What represents constant acceleration on a Distance Time Graph
Curved line
Diagonal line going down indicates what?
Velocity in another dirction
What units are speed measure in?
Measured in units of distance and time
Examples:
Milers per hour, mi/hr or mph