# 145 (1 point) A steel ball weighing 128 pounds is suspended from a spring. This stretches…

145 (1 point) A steel ball weighing 128 pounds is suspended from a spring. This stretches the spring 128 feet The ball is started in motion from the equilibrium position with a downward velocity of 7 feet per second. The air resistance (in pounds) of the moving ball numerically equals 4 times its velocity (in feet per second). Suppose that after t seconds the ball is y feet below its rest position. Find y in terms of t. (Note that this means that the positive direction for y is down.) Take as the gravitational acceleration 32 feet per second per second