Why is gravity so hard to overcome when we try to go up?

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.

Asailboat is traveling to the right when a gust of wind causes the boat to accelerate leftward at 2.5m/s2 for 4s. after the wind stops, the sailboat is traveling to the left with a velocity of 3.0m/s. assuming the acceleration from the wind is constant, what was the initial velocity of the sailboat before the gust of wind? answer using a coordinate system where rightward is positive.

If jason ii needs 15 kw of power at 300 volts to operate, what amperage of current must flow through the cable?