Speed, Velocity, and Acceleration Notes PDF

Speed, Velocity and Acceleration AKS 8a Notes  What is speed? Speed is the distance traveled by an object divided by the time taken to travel that distance Speed is measured in meters per second (m/s)  Velocity Imagine that two birds leave the same tree at the...

Speed, Velocity and Acceleration AKS 8a Notes  What is speed? Speed is the distance traveled by an object divided by the time taken to travel that distance Speed is measured in meters per second (m/s)  Velocity Imagine that two birds leave the same tree at the same time. They both fly at 10 km/h for 5 minutes. Why don’t they end up at the same place? The birds went in different directions. Their speeds were the same, but they had different velocities.  SPEED Partner A: VELOCITY Look at the images, what is the difference between speed and velocity? Velocity is the speed of an object in a particular direction Calculating Speed Let’s practice: A car travels 300 km in 6 hours. What is the average speed of the car (in km/hr)? Speed = distance / time S =d/t Speed = 300 / 6 = 50 km/hr  Let’s practice: Remember to show your work! https://www.greatschools.org/library/cms/87/25087.pdf  What is acceleration? Acceleration is the rate at which velocity changes  What is acceleration? When an object has a constant velocity (no change in speed or direction), the object has zero acceleration.  Turn & talk: Is it acceleration? 1. Malcolm is riding his bike at 9 km/h. Ten minutes later, his speed is 6 km/h. Acceleration occurred because his speed decreased 2. Sarah rides her bike around the block at a constant speed of 11 km/h. Acceleration occurred because her direction changed (around the block) 3. Blossom rides her bike in a straight line at a constant speed of 10 km/h No acceleration occurred because neither speed nor direction changed