Lesson Objective: You will be able to identify objects’ changes in motion on a speed-time graph.

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Presentation transcript:

Lesson Objective: You will be able to identify objects’ changes in motion on a speed-time graph.

Jiff walked on his hind legs 83 feet in 4 seconds Jiff walked on his hind legs 83 feet in 4 seconds. What is Jiff’s average speed?

What is Acceleration?

Acceleration Acceleration is: 1. Speeding up 2. Slowing down 3. Changing direction

Acceleration To speed up = accelerate. To slow down = decelerate.

Where are the x-y axes?

= speed time =

No Movement A horizontal line at the BOTTOM of the graph = no movement.

Constant Speed A horizontal line in the graph = constant speed.

Acceleration A line going up = acceleration (speeding up).

Deceleration A line going down = deceleration (slowing down).

1 = No Movement 2 = Constant Speed 3 = Acceleration 4 = Deceleration

Labeling & Gluing in Graphs

Constant Accelerating Accelerating Constant Decelerating Rest

Partner Practice