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Most species of salmon must swim upstream in order to reach their spawning grounds. When an artificial dam prevents this migration, wildlife managers sometimes transport them to the top of the dam using a flexible tube that contains flowing wa- ter (known as the "Salmon Cannon"). Suppose that a salmon emerges from the transport tube at a height h = 2.5m above the water level at the top of the dam, and with a launch an- gle of 0 = 17 above the horizontal. If the salmon covers a horizontal distance of x = 3.9m before hitting the water, then how much time did it spend airborne? For the limits check, - investigate what happens to the flight time t as the horizontal distance x approaches zero