9. If F = 40 N and M= 1.5 kg, and The 2M block is on a table while the m block is hanging off, what is the tension in the string connecting M and 2M? Assume that all surfaces are
frictionless.

a. 13N
b. 23 N
c. 36 N
d. 15 N
e. 28 N

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