23-09-2014
Physics

contestada

You throw a ball downward from a window at a speed of 2.0m/s. How far has it fallen in 3 seconds?

Respuesta :

samuelhoang samuelhoang

23-09-2014

Let's just assume that you throw the ball with an initial speed of 2 m/s instead of dropping it like free falling.
a=9.81 m/s^2
Vi= 2 m/s
t= 3 x

we use the formula
d = (Vi)(t) + (1/2)(a)(t)^2
d= (2)(3) + (1/2)(9.81)(9)
d=50.145 m

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