denise40101 denise40101

08-07-2017
Physics

contestada

A penny falls from a windowsill which is 25.0 m above the sidewalk. How much time does a passerby on the sidewalk below have to move out of the way before the penny hits the ground?

Respuesta :

RickyChen RickyChen

08-07-2017

You need to know the formula:

25 = 1/2 * g * t^2

t = √(50/g) = 2.258 s, where I use g = 9.8 m/s^2

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chachio42 chachio42

28-06-2021

Answer:2.26

Explanation:

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