Help pleas!! What is something that you would like to see a physicist develop in the future?

Teleportation (artificial or natural over wormhole).

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min