anonymous
  • anonymous
A rock is dropped from a height of 2.5 meters. What is its velocity when it reaches the ground?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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Mendicant_Bias
  • Mendicant_Bias
You can approach this in a few different ways, but right now, I'll go with one off the top of my head. Here's a fundamental projectile motion equation:\[v ^{2} = v _{0}^{2}+2ax\] Where V is your final velocity, Vo is your original velocity, a is your acceleration, and x is the total distance traveled. Now, since you know that it was dropped rather than thrown, you know that your starting (original) velocity is zero, yes? From here, you can just plug in and solve.
Mendicant_Bias
  • Mendicant_Bias
\[v ^{2} = (0) +2(2.5)(9.81)\]
anonymous
  • anonymous
49.05?

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Mendicant_Bias
  • Mendicant_Bias
That would be v^2. Now what would v be, if what you have is v^2?
anonymous
  • anonymous
7
Mendicant_Bias
  • Mendicant_Bias
Yes! There you go. Do you understand now?
anonymous
  • anonymous
yess thank you :)

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