Can someone teach me Japanese plz:)

Read the excerpt from "amigo brothers.” felix and antonio turned and faced each other squarely in a fighting pose. felix wasted no time. he came in fast, head low, half hunched toward his right shoulder, and lashed out with a straight left. he missed a right cross as antonio slipped the punch and crossed and countered with one-two-three lefts that snapped felix’s head back, sending a mild shock coursing through him. if felix had any small doubt about their friendship affecting their fight, it was being neatly dispelled.

Atrajectory has an initial velocity of 1,000 meters per second, and 5 seconds later, it has a velocity of 500 meters per second. which is the acceleration of the trajectory?

How do you say “i love you” in your language?