A hot-air balloonist, rising vertically with a constant velocity of magnitude 5.00 m/s releases a sandbag at an instant when the balloon is 40.0 m above the ground (Figure shown to the right). After it is released, the sandbag is in free fall. (a) Compute the position and velocity of the sandbag (b) at 0.250 s and 1.00 s after its release.