autumnmarkette autumnmarkette

08-06-2022
Physics

contestada

an object is dropped from a height of 25 meters.at what velocity will it hit the ground?
a.)7.0 m/s
b.)11 m/s
c.)22m/s
d.) 49 m/s
e.) 70 m/s

Respuesta :

jsimpson11000 jsimpson11000

08-06-2022

Answer:

C. 22 m/s

Explanation:

Ignoring air friction....all of the Potential energy will be converted to Kinetic Energy

mgh = 1/2 m ^v^2

gh = 1/2 v^2

sqrt (2 gh) = v = ~ 22.1 m/s

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