Astudent slides a book across a desk, with a velocity of +8 m/s. when her friend catches the book, it has a velocity of +7.4 m/s. if the acceleration was a constant -5.6 m/s2, how wide is the desk? a. 0.05 m b. 0.60 m c. 0.83 m d. 1.65 m

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