#### Neohm

When a diver enters a pool after a dive and stops in the water after 5 meters, how is the work/energy theorm set up?

I said Wnet = Change in K, so

Wg + Q = K,

where Wg is the work done by gravity, mgh, and Q is the work done by the resistance of the water. Are Wg and Q negative (-Wg - Q = K), since they are in the opposite direction of motion, and oppose the divers motion when he hits the water? Or can they be added becuase they are both negative work? Oh, and is positive or negative 5 meters used in the calculations?

I said Wnet = Change in K, so

Wg + Q = K,

where Wg is the work done by gravity, mgh, and Q is the work done by the resistance of the water. Are Wg and Q negative (-Wg - Q = K), since they are in the opposite direction of motion, and oppose the divers motion when he hits the water? Or can they be added becuase they are both negative work? Oh, and is positive or negative 5 meters used in the calculations?

Last edited by a moderator: