If a river current is 8.0 m s and a boat is traveling 10.0 m s upstream what is the boats relative speed to the riverbank

Which fators influence ocean currents

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.