Question

a) Define 'impulse' b) Explain why both 'N s' and 'kg m s-1' are appropriate S.l. units for impulse. c) An aircraft with total mass 45,000kg accelerates on the runway from rest to120ms-1 at which point it takes off. The engines provide a constant driving force of 120kN. Calculate the gain in momentum and the time to take off

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