Mars Landing In January 2004, NASA

Mars Landing In January 2004, NASA

Mars Landing In January 2004, NASA landed exploration vehicles on Mars. Part of the descent consisted of the following stages:
Stage A: Friction with the atmosphere reduced the speed from 19,300 km/h to 1600 km/h in 4.0 min.

Stage B: A parachute then opened to slow it down to 321 km/h in 94 s.

Stage C: Retro rockets then fired to reduce its speed to zero over a distance of 75 m.
Assume that each stage followed immediately after the preceding one and that the acce1emtion during each stage was constant.

(a) Find the rocket’s acceleration (in m/S’) during each stage.

(b) What total distance (in km) did the rocket travel during stages A, B, and C?

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