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Tju [1.3M]
3 years ago
7

A girl standing on a bridge throws a stone vertically downward with an initial velocity of 15.0 m/s into the river below. If the

stone hits the water 2.00 seconds later, what is the height of the bridge above the water?
Dont give the answer, just tell me how to do it pls
...?
Mathematics
1 answer:
Sophie [7]3 years ago
8 0
Take [down] as the positive direction. 

<span>h = vt + 1/2 g t^2 </span>

<span>v is initial vertical speed </span>
<span>g is acceleration due to gravity </span>

<span>h = 15.0 m/s (2.00 s) + 1/2 (9.80 m/s^2 )(4 s^2) </span>
<span>h = 30.0 m + 19.6 m </span>
<span>h = 49.6 m </span>

<span>The bridge is 49.6 m above the water.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
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