How to calculate SPEED

What is the fastest land animal in the world? http://www.youtube.com/watch?v=AzRIW21rvxE

How to calculate speed Time Distance and To find speed you need two things…. Speed is express as Distance per Time. What are some Examples? Time Distance and

10 m 4 min 2 m/s 20 cm 6 mm/sec 30 s 100 km 60 miles 100 cm/min After seeing each unit decide if it is a…. Distance Time Speed 10 m 4 min 2 m/s 20 cm 6 mm/sec 30 s 100 km 60 miles 100 cm/min 10 km/h

Once you understand COMPLETE the blank triangle in your notes. Equation = S = d / t Equation = d = S x t Equation = t = d / S Once you understand COMPLETE the blank triangle in your notes.

Partner A explain to your partner IN FULL how you would use the speed triangle. If you both agree write it in your notes Partner B on your white board show your partner the equation you use to find… Time Distance Speed IF partner A agrees with your solution write each equation in your notes.

We will do an example together Mr. Busby ran 30 meters in 4 seconds. How fast did he run? What you have… D= T= S= 30 meters 4 seconds We are looking for this What equation? Sub numbers in Solve the equation S = 30m / 4s S= 7.5 m/s S = D / T S = 30m / 4s

Rally Coach Take turns explaining how to solve each problem. Follow the instructions and fill in each box. You may use a calculator.

Correct Answers A. 200 meters B. 500 seconds C. 10 mm/s D. 5 m/s

Complete the table on your own Correct Answers. 1. 180 meters 2. 5 m/s 3. 30 sec 4. 120 meters 5. 50 m/s 6. 20 s Go over the ones you missed. Have your partner teach you how to do it correctly. If you both got it wrong go over it together.

10 Point Quiz: You may use your notes Solve the problem using the speed triangle. Please use the outline given to you below If a car travels 400m in 20 seconds how fast is it going? D= t= S= What equation? Sub numbers in Solve the equation