How do we talk about or describe motion

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How do we talk about or describe motion?

• Page 20 in Notebook
• School Book Chapter 1
• Home Book Chapter 5 6

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• SPEED how fast an objectchanges position

A. To calculate SPEED, we need..
1. How far it went AND
2. How long it took to go that far
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EXAMPLE
A. If this car traveled a bumpy dirt road
for 25 miles in half an hour, and then traveled
45 miles in the next half hour, what was the
cars speed during the whole trip?
25 miles in ½ hour
45 miles in ½ hour
70 miles per hour or 70 miles/hr
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B. Speed Distance time
- If this car traveled 60 kilometers in 20
mintues, what is its speed?
Cars speed 60 km divided by 20 min 3 km/min
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II. Velocity
A. Motion is also described by Velocity
1. Velocity is the
a. Speed at which an object moves.
b. In a certain DIRECTION.
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Velocity Speed Direction
2. Direction can be general or specific. For
example
NORTH, SOUTHEAST, UP, FORWARD
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Velocity Speed Direction
3. So a car traveling 50 miles towards the east
for two hours has a velocity of ????
25 miles per hour EAST