Speed Notes.

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Presentation transcript:

Speed Notes

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

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

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

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

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