Suppose you are stranded in the middle of a frozen pound, 783 m in diameter which is so slippery that your feet slide freely and don't move you. In desperation you write an S.O.S. on your hat, mass 0.6 kg, and fling it towards the north with a velocity of 15 m/s at52owith the horizontal. If your mass is 69 kg, determine how long does it take you to reach the shore?