# Physics

posted by .

The method by which the Mars exploration rovers, Spirit and Opportunity, landed on the surface of Mars in January of 2004 was quite elaborate. The rovers began their descent through the thin Martian atmosphere on a parachute until they reached an altitude of about 16.7 m. At that point a system of four air bags with six lobes each were inflated, retro rockets
brought the craft to rest, and the rovers detached from their parachutes.
After free-falling to the surface, with an acceleration of 3.72 m/s^2, and bouncing about a dozen times, the rovers deflated their air bags, righted themselves, and went about their explorations. On the first bounce from the surface, the rovers had an initial velocity of 9.92 m/s at an angle of 75.0
degrees above the horizontal. (A) What was the maximum height of a rover between the first and second bounces? (B) How far did a rover travel in the horizontal direction between the first and second bounces?

• Physics -

(A) Use the vertical component of the initial bounce velocity (9.92 m/s*sin 75) and the acceleration of gravity near the Martian surface (3.72 m/s^2) to get the time in the air during the first bounce, and the maximum height.
(B) Multiply the time you get in (A) by the horizontal velocity component, 9.92 m/s* cos 75.

• Physics -

2.57

## Similar Questions

1. ### Physics

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 19300 to 1600 in 4.0 . Stage B: A parachute then opened …
2. ### Physics

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 19300km/h to 1600km/h in 4.0min Stage B: A parachute then …
3. ### physics

Meteorites from Mars Several meteorites found in Antarctica are believed to have come from Mars, including the famous ALH84001 meteorite that some believe contains fossils of ancient life on Mars. Meteorites from Mars are thought to …
4. ### Physics

The atmosphere of Mars exerts a pressure of only 600 Pa on the surface and has a density of only 0.02 kg/m3. (a) What is the thickness of the Martian atmosphere, assuming the boundary between atmosphere and outer space to be the point …
5. ### Science (Mars rovers)

What were some of the differences between spirits , opportunity,and curiosity's tools .
6. ### Language Arts

Why does the author of"Making Tracks on Matt's"sometimes use the pronouns we and us when he is writing about the rovers?