My answers are in the comments. Sorry for the repeated answers on some of them
The person in question traveled 12 meters horizontally and fell 19.6 meters vertically when jumping off the diving board. Horizontally, their **speed **upon hitting the water was 6 m/s, the same as their initial speed, while vertically, they were traveling at 19.6 m/s when they hit the water. ;
You traveled 12 meters horizontally and 19.6 meters vertically in 2 seconds. Your horizontal speed upon hitting the water was 6 m/s, and your vertical speed was 19.6 m/s. The horizontal motion is constant, while vertical motion is affected by gravity.
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