The answer to the question

Current

Opposite(?)

Explanation:

To be honest, context clues kind of give away the answer for the first blank.

If you pass a magnet through a solenoid, a current will be induced. The direction of the current through the solenoid depends on the orientation of the magnet. If you push a magnet through the solenoid with the N pole facing first, the current will be induced from the N pole to the S pole. If you then move the magnetic so that the S pole is first, the current will reverse. I'm not sure what the specific answer is for the second blank, but contextually I'm going to assume it's 'opposite.'

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000