A horizontal circular jet of air strikes a stationary flat plate . The jet velocity is 40 m/s and the jet diameter is 30 mm. If the air velocity magnitude remains constant as the air flows over the plate surface in the directions shown, determine: (a) the magnitude of FA, required to hold the plate stationary.
b/the fraction of mass flow along the plate surface in each of the two directions.

Assume no frictional losses.
Assume air density of 1.23 kg/m3.

Something like:http://www.chegg.com/homework-help/questions-and-answers/horizontal-circular-jet-air-strikes-stationary-flat-plate-indicated-fig-p565-jet-velocity--q3779753

How do I find the fraction of mass flow? Is it by resolving forces?

Question

A horizontal circular jet of air strikes a stationary flat plate . The jet velocity is 40 m/s and the jet diameter is 30 mm. If the air velocity magnitude remains constant as the air flows over the plate surface in the directions shown, determine: (a) the magnitude of FA, required to hold the plate stationary.
b/the fraction of mass flow along the plate surface in each of the two directions.

Assume no frictional losses. 
 Assume air density of 1.23 kg/m3.

Something like:http://www.chegg.com/homework-help/questions-and-answers/horizontal-circular-jet-air-strikes-stationary-flat-plate-indicated-fig-p565-jet-velocity--q3779753

How do I find the fraction of mass flow? Is it by resolving forces?