Physics
Tbueche
29

A rock is dropped from a height of 2.5 meters. What is its velocity when it reaches the ground? a.3.5 meters/second b.7.0 meters/second c.12 meters/second d.14 meters/second e.49 meters/second

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(1) Answers
dimasaleh101

We know, v² - u² = 2as Here, u = 0   [ Free fall ] a = 9.8 m/s² [ Constant value for Earth System ] s = 2.5 m Substitute their values,  v² - 0 = 2 * 9.8 * 2.5 v² = 49 v = √49 v = 7 m/s In short, Your Answer would be Option B Hope this helps!

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