1. Speed Notes

2. Speed Three Ways to Calculate Speed
Comparison of time and distance
Distance traveled per unit time
Average speed - Rate of motion calculated by dividing the distance traveled by the amount of time it takes to travel that distance
Constant speed - Speed that does not change
Instantaneous speed - Speed of an object at any given time

3. Divide Distance by Time
Calculating Speed
Divide Distance by Time
Distance ÷ Time = Speed
Speed = Distance ÷ Time

4. Example 1 Speed = distance ÷ time Speed = 300km ÷ 6 hours
A car travels 300km in 6 hours. What is the speed of the car?
Speed = distance ÷ time
Speed = 300km ÷ 6 hours
Speed = 50km/hr

5. Example 2 How far can a plane travel if it flies 800km/hr for 9 hours?
Distance = Speed ▪ Time
D = 800km ▪ 9hrs hr
D = 7,200 km

6. Example 3
How long does it take a ship to go 500 km if it travels at a speed of 50km/hr?
Time = Distance ÷ Speed
T = 500 km ÷ 50 km/hr
T = 10 hr