Final answer:
The driver of a motor boat encounters kinetic friction and resistive force from the water, as well as a buoyant force that keeps the boat afloat. If moving in a curve, the boat also experiences a centripetal force.
Step-by-step explanation:
When the driver of a motorboat moves at a certain speed, they encounter a variety of forces. One of these is the resistive force, which is caused by the interaction between the oars and the water the boat is traveling in, assuming the driver is using oars. If the movement is powered by a motor and the boat is in motion, the primary resistive force would be the kinetic friction between the boat and the water.
Another force at play is the buoyant force, which acts upwards and is equal to the weight of the water displaced by the boat, allowing it to float. Additionally, if the boat is traversing a curved path, it may experience a centripetal force directed toward the center of the curve, which is necessary to maintain the boat's circular path.