101. A 1.14 × 10*-kg lunar landing craft is about to touch down on thesurface of the moon, where the acceleration due to gravity is 1.60 m/s².At an altitude of 165 m the craft's downward velocity is 18.0 m/s. Toslow down the craft, a retrorocket is firing to provide an upward thrust.Assuming the descent is vertical, find the magnitude of the thrust neededto reduce the velocity to zero at the instant when the craft touches thelunar surface.

Given: Mass of the lunar landing craft = 1.14 x 10 4 Kg Acceleration due to gravity = 1.60 m/s2…

Answered: 101. A 1.14 × 10*-kg lunar landing…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 84PQ

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A 1.14×104 kg lunar landing craft is about to touch down on the surface of the moon, where the acceleration due to gravity is 1.60 m/sec2 at an altitude of 165 m the craft's downward velocity is 18.0 m/s to slow down the craft, a retrorocket is firing to provide an upward thrust. Assuming the descent is vertical, find the magnitude of the thrust needed to reduce the velocity to zero at the instant when the craft touches the lunar surface.
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