A spring with a mass of 2 kg has damping constant 14, and a force of 4.8 N is required to keep the spring stretched 0.4 m beyond its natural length. Find the mass that would produce critical damping.
What will be an ideal response?
49/12
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Solve the problem.A plane flies 440 miles with the wind and 330 miles against the wind in the same length of time. If the speed of the wind is 22 mph, what is the speed of the plane in still air?
A. 179 mph B. 154 mph C. 159 mph D. 144 mph
Solve the problem.Wind speed varies in the first twenty meters above the ground. For a particular day, let 
compute the wind speed x meters above the ground. At what height is the wind speed 10 meters per second? Round results to the nearest hundredth.
A. 0.22 B. 2.18 C. 0.80 D. 1.25
Multiply.(x + 9)(x - 9)
A. x2 - 18x - 81 B. x2 - 18 C. x2 - 81 D. x2 + 18x - 81
Determine which point is on the graph of the equation y = 5x + 6.
(a) ( -7, -16 ) (b) ( -5, -14 ) (c) ( 5, 6 ) (d) ( -4, -14 ) (e) ( -4, -15 )