9 One night a man of height h 1 8 m is standing on the bank

Last updated: 6/13/2023

9 One night a man of height h 1 8 m is standing on the bank of a straight pond The water surface is calm on the opposite bank a lamp is at height H 5 4 m from surface of water Light emanated from the lamp appears as a flare bright spot after reflection from the water surface When the man starts walking along the bank the flare appears to him moving at constant speed u 3 ms relative to ground Find the speed in ms of the man