Motion.

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Presentation transcript:

Motion

What is Motion? any physical movement or change in position or place, relative to a reference point Movement Reference Point

Distance = how far an object has moved. Measured in meters, kilometers (cm or mm) If each mark represents 10 cm, what is the distance between the girl and the ball? ______ Y Axis X Axis

Her final displacement is ______ from the starting point. If the girl walks to the red ball, then walks backwards to the bear, how far has she traveled? ______ Y Axis X Axis Displacement = the distance of a body's change in position from a starting point. Her final displacement is ______ from the starting point.

Speed = the distance an object travels per unit of time (sec, hour, year..etc) Speed Equation Speed (meters/second) = distance (in meters) time (sec) s = d t

A car travels a distance of 500 m in 10 sec. What is the car's speed? s = d/t A second car travels a distance of 100 meters in 20 seconds. What is this car's speed?

More practice. (Speed = distance/ time) An elevator travels from the first floor to the 25th floor of a building, a distance of 100 meters, in 30 seconds. What is the elevator's speed? Distance = ______ Time = _______ Speed = _______

Constant Speed vs Changing Speed Constant speed means that the speed stays the same throughout the entire distance *Very few things can stay at a constant speed. Rather, things usually move at a constant speed for a period of time. The cyclist speeds up, slows down, stops..etc

Speed and the Two-Step Objective: In this lab, you will measure and graph your speed and acceleration as you walk from one point to another. Step 1: Marking Your Space. Step 2: Speed of a Shuffle Step 3: Speed of a Heel-to-Toe Walk Step 4: Normal Walk Switch partners and time again….