1. What is its average velocity over this time interval? Express your answer to

Question

1. What is its average velocity over this time interval?

Express your answer to two significant figures and include the appropriate units.

A particle at t1 = -1.5 s is at x1 = 4.0 cm and at t2 = 5.0 s is at x2 = 9.0 cm .

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2. What is its average velocity over this time interval?

Express your answer using two significant figures.

A rolling ball moves from x1 = 8.2 cm to x2 = -4.4 cm during the time from t1 = 3.7 s to t2 = 7.0 s .

Explanation / Answer

Average Velocity (Vav) = (XfXi)/(tfti)

Average Velocity = (X2-X1)/(t2-t1) = (9.0-4.0)/(5.0-(-1.5))

Average Velocity =  0.76cm/s Or .08 m/s

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