Question

These answers are different because the gravitational component works against the box's motion in Question 2
and with the motion in Question 1. The block experiences a greater net force traveling down the ramp because
the gravitational force further accelerates the box instead of decelerating it. rephrase like a 8th grader

Answer 1

The answers are different because gravity affects the box in two ways. In Question 1, gravity works against the box as it tries to move up the ramp, slowing it down. But in Question 2, gravity helps the box as it moves down the ramp, speeding it up. That's why the box goes faster down the ramp – gravity is helping it instead of holding it back.