The act of moving something forward is called propulsion. Propulsion is the force that pushes a rocket into space, that sends a football spiraling toward a receiver's hands, and that moves a strongly kicking swimmer through the water. ... In water, flippers, fins, and the wind can aid propulsion.

How do you find the propulsive force?

The force (thrust) is equal to the exit mass flow rate times the exit velocity minus the free stream mass flow rate times the free stream velocity.

What is propulsive force in swimming?

The propulsive force ± defined as the component of the force in the swimming direction (x) ± is equal to the sum of the x-components of the drag and lift forces generated by the hand. Therefore, to calculate the propulsive force, the directions of the lift and drag forces need to be known.