One of the more popular rumors about New York City is that dropping a penny from the top
of the Empire State Building can result in the
death of a pedestrian below. In reality, a penny,
dropped from rest, reaches a speed of only
100.0 m/s at the bottom of the tower. How long
does it take the penny to fall?

Astone is dropped from the upper observation deck of a tower, 250 m above the ground. (assume g = 9.8 m/s2.) (a) find the distance (in meters) of the stone above ground level at time t. h(t) = (b) how long does it take the stone to reach the ground? (round your answer to two decimal places.) s (c) with what velocity does it strike the ground? (round your answer to one decimal place.) m/s (d) if the stone is thrown downward with a speed of 2 m/s, how long does it take to reach the ground? (round your answer to two decimal places.) s