That depends on what shore you're talking about, the streams that come by that shore, the earth's seismic activity and the weather. You'd have to be more specific for a numerical answer.
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Ignoring air resistance . . .H = 1/2 G t2t = sqrt(2H/G) = sqrt(2 x 363 / 32.2) = 4.75 seconds (rounded)
If the ball was dropped from a roof and hit the ground 3.03 seconds later, then when it hit the groundits velocity was 29.694 meters (97.42 feet) per second (rounded) downward.
a radar uses a "parabolic" dish to capture the radio waves and because the shape is concave the waves hit the centre of the dish, the receiver is placed away from the centres facing the dish where the waves are reflected to it. The classic example is satellite dish receivers
On Earth gravity equals 9.8 m/s^2. If you multiply that by 8 seconds you get: 78.4m/s
Speed / Distance=Time 2283.6211MPH/60KM= 61.25219859267292 seconds