Question

A rolling ball moves from x1 = 7.5 cm to x2 = -5.8 cm during the time from t1= 4.2 s
to t2 = 9.5 s. What is its average velocity over this time interval? *
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Answer 1

Respuesta:

-2.51 cm/s

Explicación:

v= $\frac{-5.8 - 7.5}{9.5 - 4.2}=\frac{-13.3}{5.3}=-2.51 cm/s$