Suppose that sound travels at a speed of 345 m/s on the evening of a
thunderstorm. There is a lightning strike some distance from your home.
The light reaches you nearly immediately. Yet the thunder is heard 4.5
seconds later. How many miles from your home did the lightning strike?
(1600 meters = 1 mile) *

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