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Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?

Explain why you think this diagram shows what happened to the carbon in the biodome.

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass