Jet fighter planes are launched from aircraft carriers with the aid of their own engines and a catapult. If in the process of being launched from rest, the thrust of a jet's engines is 2.30 105 N and after moving through a distance of 90 m the plane lifts off with a kinetic energy of 3.60 107 J, what is the work done (in J) on the jet by the catapult?

The work done on the jet by the catapult is 1.53 x  10⁷ J

Explanation:

Given;

force of thrust engines, F =  2.3 x 10⁵ N

distance moved by the thrust engines, d =  90 m

kinetic energy of the plane, K.E = 3.60 x 10⁷ J

Based on work-energy theorem;

the net work done on the plane by catapult and the thrust engine is given as;

work done by the thrust engine on the jet;

Work done on the jet by the catapult;

Therefore, the work done on the jet by the catapult is 1.53 x  10⁷ J

d. air pressure decreases as altitude increases.

see earlier