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  • 17-10-2021
  • Physics
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A rock is dropped from a helght of 2.5 meters. What is its velocity when it reaches the ground?

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yashjaglan012
yashjaglan012 yashjaglan012
  • 17-10-2021

u=0 m/s

h=2.5m

Using kinematic eq:

[tex] {v}^{2} - {u}^{2} = 2gh \\ {v}^{2} - {0}^{2} = 2gh \\ v = \sqrt{2gh} \\ v = \sqrt{2 \times 10 \times 2.5} \\ v = \sqrt{50} \\ v = 7.07m/s[/tex]

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