If a train is going 35 mph and theres a dude standing in a boxcar and he jumps 2 feet in the air, where will he land? In the same spot, or ahead of or behind the spot he jumped from? currently some friends and I are debating this. some say the same spot some say behind. I say the same spot due to newtons 1st law of motion, and general relativity. 1. what is the anwser 2. what is the equation to solve it ?