Speed Graphs

• Shows how  speed changes over time

• X axis = TIME

• Y axis = SPEED

• The line on a speed – time graph is CLOSER to the x-axis in the BEGINNING of the time period when it has a LOWER speed

• The line slants  UPWARD toward the right side of the graph as the speed INCREASES     

  
  

• The line will be HORIZONTAL

• The further the line is from the X-AXIS the FASTER it is moving.

• Distance increases at a steady rate

• Object's speed does not change, but it is not zero

• The speed is zero and does

   not change

• Horizontal line (like a

  distance – time graph  y = 0

• When initially starting to slow down the  point representing speed is FAR from the x-axis.

• When the line touches the x-axis, the speed is ZERO and the object

  stopped.

• The line on a speed-time graph slopes downward to the right. 

• As the distance increases the rate of increase gets smaller over time

• The speed of the object decreases at a steady rate over time

Answer the following question

The remainder of the lesson is review. You may also need to use the speed or velocity equation. Tomorrow there will be a quiz over all this information for the end of the quarter.

distance/time=speed

displacement (distance)/time=velocity (speed + direction)