The 215-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 Tfor 5.2s which varies with the time as shown and then cuts off, calculate the velocity of the lander when t = 6.3s 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. 4.5 m/s T.N 748 2.6 5.2 1, Answe: V= m/s

The 215-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 Tfor 5.2s which varies with the time as shown and then cuts off, calculate the velocity of the lander when t = 6.3s 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. 4.5 m/s T.N 748 2.6 5.2 1, Answe: V= m/s

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter9: Linear Momentum And Collisions

Section: Chapter Questions

Problem 90AP: Repeat the preceding problem, but including a drag force due to air of fdrag=bv .

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