Question

A jet aircraft is traveling at 296 m/s in horizontal flight. The engine takes in air at a rate of 103 kg/s and burns fuel at a rate of 3.86 kg/s. The exhaust gases are ejected at 757 m/s relative to the aircraft. Find the thrust of the jet engine. Answer in units of N

Answer 1

50405.02 N

Step-by-step explanation:

Using Newton second law of motion

Force × time = change in momentum

Force = change in momentum / time = m₁Δv + m₂v₁

where m₁ = 103 kg/s, m₂ = 3.86 kg/s , v₁ = 757 m/s,

Force = 103 kg/s ( 757 - 296 ) + (3.86 kg/s × 757 m/s) = 47483 + 2922.02 = 50405.02 N