Answer:
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Answer
Given,
Air enter density, ρ₁ = 2.21 kg/m³
speed of entry, v₁ = 40 m/s
Air exit density , ρ₂ = 0.752 kg/m³
speed of exit, v₂ = 180 m/s
Inlet area = 90 cm²
a) mass flow rate through nozzle.
m = 0.796 kg/s
b) exit area
Using continuity equation
Exit area of nozzle is equal to
The equation you would use here is F=ma, where F is the force in Newtons, m is the mass in kilograms (must be in kilograms in order for the units to match on both sides), and a is acceleration in meters per second squared. Therefore, you do: 65kg x .3m/s^2= FF. That'll give you the answer.
That makes no sense I can't help sorry