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Speed.

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Presentation on theme: "Speed."— Presentation transcript:

1 Speed

2

3

4 Let’s hope this isn’t you!

5 Distance (d) The measurement from one point to another
How far something has traveled Possible units for distance: Miles (mi) Kilometers (km) Feet (ft) Centimeters (cm)

6 Displacement How far you are from the start

7 Time (t) How long it takes for something to happen
Possible units for time: Minutes (min) Seconds (s) Hours (hr)

8 Speed (s or v) How quickly an object gets from place to place
How fast or slow Speed = distance / time

9 Units for Speed Units for speed is a derived unit
This means it comes from 2 other units (distance and time) Examples: Miles per hour (mph) Meters/second (m/s) Kilometers/hour (km/hr)

10 Cover up what you are solving for!
Speed Cover up what you are solving for! d s t s = d/t

11 d s t d = s x t What is the formula to solve for distance?
Cover up what you are solving for! d = s x t

12 d s t t = d/s What is the formula to solve for time?
Cover up what you are solving for! t = d/s

13 Speed is distance over time!

14 5-Step Problem Solving What you know What you are solving for Formula
Fill-in Final Answer with Units

15 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units A car takes four hours to reach its destination. The distance was 340 miles. What was the speed of the car?

16 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units A boat was traveling at a speed of 36 km/hr. It has to travel a distance of 210 km. How long will it take?

17 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units The speed of a cruise ship is 50 km/hr. How far will it travel in 14 hours?

18 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units A hydroplane made speed records by traveling 239 miles in 45 minutes. What is its record-breaking speed in mph?

19 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units A football field is about 100 m long. If it takes a person 20 seconds to run its length, how fast (what speed) were they running?

20 5-Step Problem Solving What you know What you are solving for Formula Fill-in Final Answer with Units A bullet travels at 850 m/s. How long will it take a bullet to go 1 km?


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