physics

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an object is dropped from the window of an apartment in a high rise building reaches the ground in 3 seconds. on which floor the apartment is located if height of each floor is 4m and window is 1 meter above the ground of that floor?

  • physics -

    h = Vo*t + 0.5g*t^2
    h = 0 + 5*3^2 = 45 m. = Height of object above gnd.

    (45-1)/4m = 11th floor.

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