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23 Nov 2019
A child throws a stone with a speed of 15m/s at an angle of 60degrees above the horizontal. The stone follows the usual parabolictrajectory and falls into a well. The sound of the stone hittingthe water is heard 2.96 seconds after the child threw it.
A) How far below the ground is the water level in the well?
B) Determine the horizontal distance between the child and thewell.
Make the following assumptions: 1) The stone leaves the hand ofthe child at ground level. 2) The sound of the splash movesvertically up the well and then horizontally toward the child. 3)The width of the well is negligible. 4) Air resistance isnegligible.
A child throws a stone with a speed of 15m/s at an angle of 60degrees above the horizontal. The stone follows the usual parabolictrajectory and falls into a well. The sound of the stone hittingthe water is heard 2.96 seconds after the child threw it.
A) How far below the ground is the water level in the well?
B) Determine the horizontal distance between the child and thewell.
Make the following assumptions: 1) The stone leaves the hand ofthe child at ground level. 2) The sound of the splash movesvertically up the well and then horizontally toward the child. 3)The width of the well is negligible. 4) Air resistance isnegligible.
