Solve the equation mx" + Bx' = mg for r(t), given that you step off the bridge-no jumping, no diving! Stepping off means (0) = -100, x' (0) = 0, You may use mg = 160, B = 1, and g = 32. Use the solution from Problem 1 to compute the length of time t, that you freefall (the time it takes to go the natural length of the cord: 100 feet).