As Betty waits, she counts the number of waves that pass her during a 1- second period; she counts just 1. She estimates that the distance between
crests is 6 meters. Betty sees the perfect wave and begins paddling. She
pushes herself up, stands on the surfboard and rides the wave all the way
in to shore, a distance of about 60 meters. It takes her about 10 seconds
to ride the wave in. (A) Use 2 methods to calculate the speed of the wave
based on the information presented. What speeds did you calculate? (B)
Are they the same? (C) In complete sentences, explain how you got your
answers.
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Asilver dollar is dropped from the top of a building that is 1324 feet tall. use the position function below for free-falling objects. s(t) = −16t2 + v0t + s0 (a) determine the position and velocity functions for the coin. s(t) = v(t) = (b) determine the average velocity on the interval [1, 2]. ft/s (c) find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft/s v(2) = ft/s (d) find the time required for the coin to reach the ground level. (round your answer to three decimal places.) t = s (e) find the velocity of the coin at impact. (round your answer to three decimal places.) ft/s