Based on your observations, which factors affect the potential energy of the skateboarder? How do these factors affect the amount of potential energy?
Please help ASAP

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Alead ball is dropped into a lake from a diving board 5m above the water . it hits the water with a certain velocity and then sink with constant velocity in bottom . it reaches the bottom 5 second after it is dropped if g= 10m/s2 . find depth of the lake and average velocity of the ball ?

Avoltaic cell converts chemical energy to