Answer:
a)

b)
m = 48lb
c)
b = 144.76lb
Explanation:
The general equation of a damping oscillate motion is given by:
(1)
uo: initial position
m: mass of the block
b: damping coefficient
w: angular frequency
α: initial phase
a. With the information given in the statement you replace the values of the parameters in (1). But first, you calculate the constant b by using the information about the viscous resistance force:

Then, you obtain by replacing in (1):
6in = 0.499 ft

b.
mass, m = 48lb
c.
b = 144.76 lb/s
The 'phases' are solid, liquid, gas. A change from any one of those to any other one is a phase change. Like melting ice, or evaporating sweat.
Explanation:
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The answer will be C based on what I had researched