Drop a rock from a 5-m height and it accelerates at 10 m/s² and strikes the ground in A)1/5 s. B)1/2 s. C)1 s. D)2 s.

Name: Drop a rock from a 5-m height and it accelerates at 10 m/s 2 and strikes the ground in A)1/5 s. B)1/2 s. C)1 s. D)2 s.
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Quizplus · Accepted Answer

The time it takes for an object to fall can be calculated using the formula $ t = \sqrt{\frac{2h}{g}} $. Substituting $ h = 5 $ m and $ g = 10 $ m/s², we get $ t = \sqrt{\frac{2 \times 5}{10}} = \sqrt{1} = 1 $ s.

Drop a Rock from a 5-M Height and It Accelerates