8 The Mars roving-laboratory parachute, in the Chap. 5opener photo, is a 51-ft-diameter disk-gap-band chute.with a measured drag coefficient of 1.12 [59]. Mars has very low density, about 2.9 E-5 slug/ft', and its gravity is only 38 percent of earth gravity. If the mass of payload and chute is 2400 kg, estimate the terminal fall velocity of the parachute.

Fig: 1