A vane on this moving cart deflects a 15-cm-diameter water ( = 1000 kg/m 3 ) jet

Question:

A vane on this moving cart deflects a 15-cm-diameter water (ρ = 1000 kg/m³) jet as shown. The initial speed of the water in the jet is 50 m/s, and the cart moves at a speed of 3 m/s. If the vane splits the jet so that half goes one way and half the other, what force is exerted on the vane by the water? See §6.5 for useful knowledge about moving CV’s.