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jonny [76]
3 years ago
13

A student is on a balcony 15.6 m above the street. She throws a ball vertically downward at 10.7 m/s.

Physics
1 answer:
andrew11 [14]3 years ago
3 0

Answer:

20.65 m/s

Explanation:

You are gonna wanna use a calculator for this one

so we will write all the known variables:

h = 15.6 m

initial velocity (u) = 10.7 m/s

acceleration (a) = 10 m/s/s (gravity)

From the third equation of motion:

<em>v² - u² = 2ah</em>

<em>v² - (10.7)² = 2(10)(15.5)</em>

<em>v² - (10.7)² = 312</em>

<em>v² = 312 + 114.49</em>

<em>v² = 426.49</em>

v = 20.65 m/s

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