Q7: The 2004 Mars landers contained onboard accelerometers and Doppler shift radar to measure the acceleration and velocity of the landers as they descended through the Martian atmosphere. From this data, the atmospheric density of Mars at various altitudes was determined. Explain how this was done. Assume that the mass, surface area, and drag coefficient of the lander remain constant.

Q7: The 2004 Mars landers contained onboard accelerometers and Doppler shift radar to measure the acceleration and velocity of the landers as they descended through the Martian atmosphere. From this data, the atmospheric density of Mars at various altitudes was determined. Explain how this was done. Assume that the mass, surface area, and drag coefficient of the lander remain constant.