7) How high would you have to jump to remain in the air a total of 2 seconds? 8) An object of mass m is sliding on a frictionless surface, traveling with speed s. It hits the end of a fixed spring with spring constant k and slides to a stop as it compresses the spring. a. Calculate the distance that the spring is compressed using conservation of energy. b. If the mass is doubled, what would happen to the distance of compression? If rather than the mass being doubled, the speed is doubled, what would happen to the distance of compression?