A swimmer is heading straight for the other shore of a river with a velocity of vs=0.7 m/s relative to the water, but is carried away by the current, which has a velocity of vr=0.3 m/s. It takes her 20.3 s to get across. How far downstream does she end up?

Can someone please help me? I don't know where to start.

downstream? Vf*time

Did you know?

Did you know that when a swimmer navigates through a river, their final position can be affected by the velocity of the water current? In a scenario where a swimmer is heading straight for the opposite shore with a velocity of 0.7 m/s relative to the water, but is carried away by a current with a velocity of 0.3 m/s, the swimmer's position can be determined. By using the given information and utilizing the concept of relative velocity, which combines both velocities, one can calculate that it takes the swimmer 20.3 seconds to reach the other shore. However, due to the influence of the current, the swimmer will not directly reach the opposite shore but rather will end up downstream. Understanding the impact of external forces, such as water currents, is crucial when analyzing the motion of objects in fluids.