Answered

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A man walks 30 m to the west, then 5 m to the east in 45 seconds.
What is his average speed?

Sagot :

The displacement is the distance from the beginning point to the ending point. The time was just to throw you off. If he walks 30m due west, and then 5m due east, his displacement would be 30-5=25m to the west.
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