dragon05 dragon05

14-09-2017
Mathematics

contestada

A rock falls off a cliff and hits the ground after three seconds. What is its velocity right before it hits the ground? 9.8 m/s 0.31 m/s 29.4 m/s 3.3 m/s

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pinkbrowningow80am pinkbrowningow80am

14-09-2017

9.8 m/s

I'm not sure but I think this is the correct answer

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aloneherrxox aloneherrxox

15-09-2017

Vf = Vi + at
Vf = 0 + (9.81 m/s^2)(3 seconds)
Vf = 29.43 m/s and or about 29.4 m/s

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