is thfown straight down from the Verrazano Narrows Bridge in New York City with an initial speed of 14.5 m/s. The roadway of his bridge is 70 m above the water. Take upwards to be the positive direction.
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The rock is thrown with an initial velocity of 14.5 m/s, after which it falls under the influence of gravity, with an acceleration equal to acceleration due to gravity.
The velocity of the rock after any time t can be found using kinematical equations of motion as
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