Speed Distance and Time problems Created by Mrs

Speed, Distance and Time problems Created by Mrs. Bertoson with You. Tube videos from Mr. Ryan. Kamian

You need to understand units of speed, distance and time Speed is • How FAST We measure it in • miles per hour (mph) • meters per second (m/s) • kilometers per hour (km/hr)

You need to understand units of speed, distance and time Distance is • How FAR We measure it in • centimeters (cm) • meters (m) • kilometers (km) • miles (mi)

You need to understand units of speed, distance and time Time is • How LONG We measure it in • • seconds (s) minutes (min) hours (hr) days

How far is… A. Speed B. Distance C. Time

How long is… A. Speed B. Distance C. Time

How fast is… A. Speed B. Distance C. Time

Miles (mi) are units of… A. Speed B. Distance C. Time

Hours (hr) are units of… A. Speed B. Distance C. Time

Miles per hour (mph) are units of… A. Speed B. Distance C. Time

Meters (m) are units of… A. Speed B. Distance C. Time

Centimeters per second (cm/s) are units of… A. Speed B. Distance C. Time

Seconds (s) are units of… A. Speed B. Distance C. Time

Kilometers per hour (km/hr) are units of… A. Speed B. Distance C. Time

Centimeters (cm) are units of… A. Speed B. Distance C. Time

Here is how to use the speed triangle: • Use your hand to cover the unit (speed, distance, time) you are looking for. • If the remaining units are on the top and bottom, you will divide. • If the remaining units are side by side, you will multiply.

You can also use a circle instead of a triangle, as demonstrated here: If the video doesn’t play, watch it at http: //bertosonscience. weebly. com/what-to-study. html

What goes on the top of the triangle? A. Speed B. Distance C. Time

What is the only formula that is multiplied? A. Speed B. Distance C. Time

What is the formula for speed?

What is the formula for time?

What is the formula for distance?

What are you looking for in the problem below? If Steve throws the football 50 meters in 2 seconds, what is the average speed of the football? A. Speed B. Distance C. Time

What are you looking for in the problem below? If it takes Ashley 3 seconds to run from the batters box to first base at an average speed of 6 meters per second, what is the distance she covers in that time? A. Speed B. Distance C. Time

What are you looking for in the problem below? • Bart ran 5000 meters from the cops and an average speed of 10 meters/second before he got caught. How long did he run? A. Speed B. Distance C. Time

There are 5 steps to solve the problem: 1. Read the problem and annotate (circle the numbers and units and underline what you are looking for). 2. Identify what you are looking for and the information you have. 3. Place the information in the triangle. 4. Solve. 5. Add proper units.

Here is how to solve a SPEED problem: If the video doesn’t play, watch it at http: //bertosonscience. weebly. com/what-to-study. html

Let’s use these steps to solve a SPEED problem: time distance If Steve throws the football 50 meters in 2 seconds, what is the average speed of the football? 1. Read the problem and annotate 2. Identify what you are looking for and the information you have. 3. Place the information in the triangle. 4. Solve. Speed = d/t = 50/2 = 25 5. Add proper units. 25 m/s 50 2

Here is how to solve a TIME problem: If the video doesn’t play, watch it at http: //bertosonscience. weebly. com/what-to-study. html

Let’s use these steps to solve a TIME distance problem: • Bart ran 5000 meters from the cops and an average speed of 10 meters/second before he got caught. How speed long did he run? 1. Read the problem and annotate 2. Identify what you are looking for and the information you have. 3. Place the information in the triangle. 4. Solve. 5000 Time = d/s = 5000/10 = 500 5. Add proper units. 500 s 10

Here is how to solve a DISTANCE problem: If the video doesn’t play, watch it at http: //bertosonscience. weebly. com/what-to-study. html

Let’s use these steps to solve a DISTANCE problem: time If it takes Ashley 3 seconds to run from the batters box to first base at an average speed of 6 meters per speed second, what is the distance she covers in that time? 1. Read the problem and annotate 2. Identify what you are looking for and the information you have. 3. Place the information in the triangle. 4. Solve. Distance = s x t = 6 x 3 = 18 5. Add proper units. 18 m 6 3

Here is a more advanced problem: If the video doesn’t play, watch it at http: //bertosonscience. weebly. com/what-to-study. html