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Measuring Motion. What is Motion?. Motion is when an object changes position over time when compared with a reference point. What is Speed?. Speed is the rate at which and object moves. Determining Average Speed. Average speed is the amount of speed traveled in a given period of time.
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What is Motion? • Motion is when an object changes position over time when compared with a reference point.
What is Speed? • Speed is the rate at which and object moves.
Determining Average Speed • Average speed is the amount of speed traveled in a given period of time. • Average Speed = Total distance Total time
Calculate the Average Speed • Q. If you take a walk for 1.5 hours and travel 7.5 km, what is your average speed? • Average Speed = Total distance Total time A. Average Speed = 7.5 km = 5km/hrs 1.5 hrs
Calculate the Average Speed • Q. If the average speed of a car is 110 km/hr, how long will it take the car to travel 715 km? • Average Speed = Total distance Total time • A. 110 km/hr = 715 km x Step 1. (110 km/hr)(x)= 715 km Step 2. (110 km/hr)(x) = (715 km) (110 km/hr) (110 km/hr) Step 3. x = 715 = 6.5 hrs 110 hr
What is Velocity? • Velocity is the speed of an object in a particular DIRECTION. • Velocity changes as speed or direction changes. • Ex. 15m/s East • Ex. 28m/s North