QA1- KINEMATICS In the final stages of a moon landing, a lunar module descends under retro-thrust of its descent engine to a height of s = 4 m above the lunar surface where it has a downward velocity of 4 m/s. Calculate the impact velocity with the moon's surface if: a) The engine is cut off at this point, there is no atmosphere, and lunar gravity is 6 of the earth's 9.81 gravity (so a = - b) The acceleration under the combined effect of gravity and retro-thrust is the following function of height a = s/2. Hint: Acceleration is constant in part (a) but not in part (b). The positive direction is up.
QA1- KINEMATICS In the final stages of a moon landing, a lunar module descends under retro-thrust of its descent engine to a height of s = 4 m above the lunar surface where it has a downward velocity of 4 m/s. Calculate the impact velocity with the moon's surface if: a) The engine is cut off at this point, there is no atmosphere, and lunar gravity is 6 of the earth's 9.81 gravity (so a = - b) The acceleration under the combined effect of gravity and retro-thrust is the following function of height a = s/2. Hint: Acceleration is constant in part (a) but not in part (b). The positive direction is up.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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