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 y(t) b ct dt 2 , 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...

Identify We know the vertical position of the lande ...

A lunar lander is descending toward the moons surface. Until the lander reaches the surface, its height

Question:

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 – 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/s².

(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?