b)Newton assumed that upon striking a surface inclined at a angle 6 to the stream, the particles would transfer their normal momentum to the surface but their tangential momentum would be preserved. Hence, after collision with the surface, the particles would then move along the surface. This led to an expression for the hydrodynamics force on the surface which varies as sin 0b) Newton assumed that upon striking a surface inclined at a angle to the stream, the particles would transfer their normal momentum to the surface but their tangential momentum would be preserved. Hence, after collision with the surface, the particles would then move along the surface. This led to an expression for the hydrodynamics force on the surface which varies as   2 sin