 The distance an object travels in a certain amount of time. › Average speed – Total distance divided by total time › Constant speed - Speed that does.

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Presentation transcript:

 The distance an object travels in a certain amount of time. › Average speed – Total distance divided by total time › Constant speed - Speed that does not change over time  On your paper, describe an example of an object at a constant speed.

Speed equals distance divided by time.S=dt

One side of a track is about 100 meters long. If it takes a person 20 seconds to run its length, how fast was the person running?  In your notebook, calculate this problem. Make sure you show all work!

One side of a track is about 100 meters long. If it takes a person 20 seconds to run its length, how fast was the person running? › Speed = Distance ÷ Time › Speed = 100 m ÷ 20 s › Speed = 5m/s Remember to label the UNITS!!

 An object’s speed and direction at a given time › The wind is blowing 65 km/hr from the North.  On your paper, describe an example of velocity.

 A change in the direction or velocity of an object over time – which may be: › A change in speed  Starting  Stopping  Speeding up (positive acceleration)  Slowing down (negative acceleration) › A change in direction  Acceleration is caused by unbalanced forces.  On your paper, describe an example of an object accelerating.

 Our first super hero is Fire Hawk, he represents Speed.  Our second hero is Rocket Man, he represents Velocity.  For our final super hero we changed it up and made him a super villain, his name is Steam Roller. He represents Acceleration.

 Draw super hero  critters.com/drawsup erhero.htm critters.com/drawsup erhero.htm  bout.com/od/cartoo ning/ss/draw-super- hero-punch.htm bout.com/od/cartoo ning/ss/draw-super- hero-punch.htm