The Language of Motion 8.1.

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Presentation transcript:

The Language of Motion 8.1

- - - - - + - + + + +

2 m , 101 lbs , 50 kg magnitude NO positive sign 5 m , 25 seconds 5 m [N] , - 65 km

scalar vector scalar vector scalar

scalar length

location compare front of the class

vector reference point 10 km [E]of my house 10 km [W]of the store

20 km 10 km [W] or -10 km 0 km [E]

initial ti tf final

t = tf - ti = 5s - 2s = 3s

position straight line distance

d = df - di = 7 m [E] - 2 m [E] = 5 m [E]

+ 5m or 5m [E] + 10m or 10m [E] 0m 15m + 10m = 25 m 10-(+5m)= +5m or 5m [E] 15m+30m+10m=55m 0–(+5m)= -5m or 5m [W]