An object is thrown horizontally from the open window of a building. If the initial speed of the object is 20 m/s and it hits the ground 2.0 s later, from what height was it thrown? (Neglect air resistance and assume the ground is level.)

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Physics

Walter Ashley

16 September, 15:43

An object is thrown horizontally from the open window of a building. If the initial speed of the object is 20 m/s and it hits the ground 2.0 s later, from what height was it thrown? (Neglect air resistance and assume the ground is level.)

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Nathaniel Waller · Answer 1

An object is thrown horizontally from the open

window of a building. If the initial speed of the

object is 20 m/s and it hits the ground 2.0 s later,

from what height was it thrown? (Neglect air

resistance and assume the ground is level.)

Initial vertical velocity = 0

formula: s = ut + (1/2) * g*t^2

s = 0 + 1/2*9.8*2^2

s = 9.8*2 = 19.6 m