How to calculate SPEED What is the fastest

How to calculate SPEED

• What is the fastest land animal in the world? • http: //www. youtube. com/watch? v=Az. RIW 2 1 rvx. E

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

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

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

• 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= 30 meters T= 4 seconds S= We are looking for this What equation? Sub numbers in S=D/T S = 30 m / 4 s Solve the equation S = 30 m / 4 s S= 7. 5 m/s

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 1. If a car travels 400 m in 20 seconds how fast is it going? D= t= S= What equation? Sub numbers in Solve the equation