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Section 1 p. 525-527.  A change in position  Motion occurs when something changes position relative to a point of reference.

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Presentation on theme: "Section 1 p. 525-527.  A change in position  Motion occurs when something changes position relative to a point of reference."— Presentation transcript:

1 Section 1 p

2  A change in position  Motion occurs when something changes position relative to a point of reference.

3  The point that is used to determine if an object changes position  Example-If the starting line is your point of reference in a 100m race, then your position has changed by 100m relative the starting line and motion has occurred

4  Distance is the length of the route you travel.

5  The distance between the starting point and the ending point and the direction you travel.

6  Speed is the distance an object traveled in a unit of time.  Speed (meters /second)= distance (in meters) time (in seconds)

7  Divide the total distance traveled by the total time.

8  The speed of an object at one instant in time.

9  A speed that stays the same the entire distanced traveled.

10  Use a distance-time graph  Time is always plotted on the x-axis  Distance is always plotted on the y-axis  The steeper the line the greater the speed  A horizontal line means there is not change in position, which means the speed is zero.

11  The velocity of an object is the speed of the object and the direction of its motion.  Velocity can change  if the object’s speed increases or decreases  Direction of motion changes  Or they both change


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