A skydiver falls out of a plane at a height of 5400 m above the ground. Their parachute is unable to open. How fast will the skydiver be moving when right before they hit the ground? Assume no air resistance. Make sure you EXPLAIN how you found it.

Aheavy boy and a lightweight girl are balanced on a massless seesaw. the boy moves backward, increasing his distance from the pivot point. what happens to the seesaw? it is impossible to predict without knowing additional information. the side the boy is sitting on will tilt downward. the side the girl is sitting on will tilt downward. nothing; the seesaw will remain balanced.