An airplane of mass 1.50 x 104 kg is moving at 60.0 m/s.The pilot then increases the engine’s thrust to 7.50 x 104 N.The resistive force exerted by air on the airplane has a magnitudeof 4.00 x 104 N. (a) Is the work done by the engineon the airplane equal to the change in the airplane’s kineticenergy after it travels through some distance through the air?Is mechanical energy conserved? Explain. (b) Find the speed of the airplane after it has traveled 5.00 x 102 m. Assume theairplane is in level flight throughout the motion.

An airplane of mass 1.50 x 104 kg is moving at 60.0 m/s.The pilot then increases the engine’s thrust to 7.50 x 104 N.The resistive force exerted by air on the airplane has a magnitudeof 4.00 x 104 N. (a) Is the work done by the engineon the airplane equal to the change in the airplane’s kineticenergy after it travels through some distance through the air?Is mechanical energy conserved? Explain. (b) Find the speed of the airplane after it has traveled 5.00 x 102 m. Assume theairplane is in level flight throughout the motion.

Classical Dynamics of Particles and Systems

5th Edition

ISBN:9780534408961

Author:Stephen T. Thornton, Jerry B. Marion

Publisher:Stephen T. Thornton, Jerry B. Marion

Chapter2: Newtonian Mechanics-single Particle

Section: Chapter Questions

Problem 2.13P: A particle moves in a medium under the influence of a retarding force equal to mk(υ3+ a2υ), where k...

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