time step distance 0 0 0 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 4 7 7 3 8 8 2 9 9 3 10 10 4 11 11 5 12 12 6 13 13 7 14 14 6 15 15 5 16 16 4 17 17 5 18 18 6 19 19 7 20 20 8 21 21 9 22 22 8 23 23 7 24 24 6 25 25 7 26 26 8 27 27 9 28 28 10 29 29 11 30 30 10 31 31 9 32 32 8 33 33 9 34 34 10 35 35 11 36 36 12 37 37 13 Lets call 1 cycle = going forward + coming backIn 1 cycle, he goes 2 steps = \\\\(2 \\ m\\\\) forwardIn 1 cycle, he spends time of 8 unitsSo, in 4 cycles, displacement \\\\(= 8 \\ m\\\\), time = 32 unitsFor 5th cycle, man reaches pit in 5 steps and falls in the pitSo, total time = \\\\(32 + 5 = 37\\\\) units