A lunar lander is descending toward the moons surface.

Chapter 2, Problem 2.56

(choose chapter or problem)

A lunar lander is descending toward the moons surface. Until the lander reaches the surface, its height above the surface of the moon is given by y1t2 = b - ct + dt2 , where b = 800 m is the initial height of the lander above the surface, c = 60.0 m>s, and d = 1.05 m>s 2 . (a) What is the initial velocity of the lander, at t = 0? (b) What is the velocity of the lander just before it reaches the lunar surface?

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