Concept: Work-Energy Theorem Qu. 1 A fighter jet is launched from an aircraft carrier with the aid of its own engines and a steam powered catapult. The net thrust of its engines is 2 x 10′ N. In being launched from rest it moves through a distance of 90 m and has a kinetic energy of 4 x 10’J at lift-off. a) Draw a diagram identifying the forces and a coordinate system (5 points) b) What is the work done on the jet by the thrust? (5 points) c) What is the work done on the jet by the catapult? (5 points) d) What is the velocity of the jet at lift-off if it has a mass of 3×10 kg? (5 points)
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