Created by Mrs. Bertoson Feb 2012

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Presentation transcript:

Created by Mrs. Bertoson Feb 2012 Speed vs Time Graphs Created by Mrs. Bertoson Feb 2012

How to read the speed vs time graph The slope is acceleration (changing speed) Horizontal lines are constant speed Horizontal lines on the O are stopped Diagonal lines are changing speed

The speed is 4 m/s How to find speed Find the speed at 4 seconds. Find 4 seconds on the x-axis and follow it vertically until you reach the graph. From this point, find the y-value (speed) by looking to the left. The speed is 4 m/s

Practice finding speed Find the speed at 0.25 seconds. Find 0.25 seconds on the x-axis and follow it vertically until you reach the graph. From this point, find the y-value (speed) by looking to the left. The speed is 250 cm/s

How to find distance Plug in the numbers: distance= speed x time Find the distance travelled after 4 seconds. Find 4 seconds on the x-axis and follow it vertically until you reach the graph. From this point, find the y-value (speed) by looking to the left. Plug in the numbers: distance= speed x time distance= 4s x 4 m/s = 16 m

Practice finding distance Find the distance travelled after 10 seconds. Find 10 seconds on the x-axis and follow it vertically until you reach the graph. From this point, find the y-value (speed) by looking to the left. Plug in the numbers: distance= speed x time distance= 10s x 7 m/s = 70 m