CALC A lunar lander is descending toward the moons
Chapter 2, Problem 2.58(choose chapter or problem)
A lunar lander is descending toward the moon's surface. Until the lander reaches the surface, its height above the surface of the moon is given by \(y(t)=b-c t+d t^{2}\), where b = 800 m is the initial height of the lander above the surface, c = 600 m/s, and \(d=1.05\mathrm{\ m}/\mathrm{s}^2\). (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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