The 222-kg lunar lander is descending onto the moon's surface with a velocity of 4.5 m/s when its retro-engine is fired. If the engine produces a thrust T for 4.2 s which varies with the time as shown and then cuts off, calculate the velocity of the lander when t = 5.3 s assuming that it has not yet landed. Gravitational acceleration at the moon's surface is 1.62 m/s?. The velocity is positive if moving downward, negative if up.

The 222-kg lunar lander is descending onto the moon's surface with a velocity of 4.5 m/s when its retro-engine is fired. If the engine produces a thrust T for 4.2 s which varies with the time as shown and then cuts off, calculate the velocity of the lander when t = 5.3 s assuming that it has not yet landed. Gravitational acceleration at the moon's surface is 1.62 m/s?. The velocity is positive if moving downward, negative if up.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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