A mass of 1 slug is suspended from a spring whose spring constant is 9 lb/ft. The mass is initially released from a point 1 foot
above the equilibrium position with an upward velocity of 3 ft/s. Find the times for which the mass is heading downward at a velocity of 3 ft/s. (Enter your answers as a comma-separated list. Let n represent an arbitrary integer
The kinematic formula I would use is v(f)=v(i)+at so plugging in the values you'd get 5.5=14+a*6 So a= -1.42, the answer is negative because the car is slowing down.
