cruising at a speed of 8.00 km? Marty is sipping a soda while leaning over the railing of a cruise ship that is cruising at a speed of 8.00 km/h through Alaska's majestic Glacier Bay. One of the ice cubes in Marty's soda falls overboard, and falls 17.0 m to the water below. Marty remains at rest with respect to the ship throughout this process, and the ice cube is initially at rest with respect to Marty when it begins its fall.