An archer fish launches a droplet of water from the surface of a small lake at an angle of 70° above the horizontal. he is aiming at a juicy spider sitting on a leaf 40 cm to the east and on a branch 23 cm above the water surface. the fish is trying to knock the spider into the water so that the fish can eat the spider. (a) what must the speed of the water droplet be for the the fish to be successful?