SPEED

Speed The speed of an object is the distance an object travels per unit of time

Calculating Speed To calculate speed, divide the distance the object travels by the amount of time it took to travel that distance Speed= Distance Time

Measuring Distance Distance – how far something is Meter – international unit for measuring distance. = 50 m 1 mm

Measuring Time Time – how long something took Seconds – international unit for measuring time.

Calculating the other missing parts for Speed d t S Speed = distance time unit = m/sunit = km/h

Calculating the other missing parts for Speed d t S time = Speed unit = hrunit = min unit = sec distance

Calculating the other missing parts for Speed d t S distance = Speed unit = cm unit = m time unit = km ) ) ((

Abbreviations d- distance t- time s- speed

How to use the Triangle

Calculating Speed If I travel 100 kilometer in one hour then I have a speed of… 100 km/h d t S S = d t d = 100 kilometer t = 1 hour S = ? S = dtdt 100 kilometer 1 hour = 100 kilometer hour =

Calculating Speed If I travel 1 meter in 1 second then I have a speed of…. 1 m/s d t S S = d t d = 1 meter t = 1 second S = ? S = dtdt 1 meter 1 second = 1 meter second =

Calculating Speed If I walked 26 kilometer in 2 hours then I have a speed of… 13 km/h If a toy car rolls 45 meters in 9 seconds then the toy car has a speed of…. 5 m/s d t S S = d t

Calculating Speed If my dog jumps 3 meters in 2 seconds then my dog has a speed of… 1.5 m/s or 3/2 m/s If a meteor falls to Earth 1,000,000 kilometers in 10 seconds then the meteor has a speed of…. 100,000 km/s d t S S = d t

Calculating Speed If my dog runs 3 meters in 9 seconds then my dog has a speed of… 0.3 m/s or 1/3 m/s If Mrs. G chases Mr. G and travels 25 meters in 5 seconds then Mrs. G has a speed of…. 5 m/s d t S S = d t

Calculating Speed If my cat runs 12 meters in 4 seconds then my cat’s has a speed of… 3m/s If Mrs. G chases Mr. G with an axe and travels 300 meters in 5 seconds then Mrs. G has a speed of…. 60 m/s d t S S = d t

Calculating Speed MegaMind drove his invisible car for 5 hours in a distance of 30 kilometers. What was his average speed? 6km/h MetroMan flew for 60 seconds over a distance of 3 kilometers. What was his speed? 1/20 km/s or 0.05 km/s d t S S = d t

Calculating Speed Minion tries to skip for 40 seconds over 30 meters. What was Minion’s skipping speed? ¾ m/s or 0.75 m/s MetroMan threw a rock at MegaMind at 40 meters for a time of 30 seconds. What was the rocks speed? 4/3 m/s or 1.33 m/s d t S S = d t

Graphing Speed: BMMS Del Taco Rise Run

Graphing Speed: D12 Library Rise Run

Graphing Speed: Lap 1 Lap 2 Rise Run

Question What does the slope of a distance vs. time graph show you about the motion of an object? It tells you the SPEED

Graphing Average Speed Rise Run

Graphing Average Speed Rise Run

Graphing Average Speed Rise Run

Question Below is a distance vs. time graph for 3 runners. Who is the fastest? Leroy is the fastest. He completed the race in 3 hours