When the Perseverance rover arrived at Mars in February, it had to decelerate in the Martian atmosphere, starting with an initial speed of 150 km /h and ending with a final speed of 5 km/h in a: vertical displacement of magnitude 9 km descending (downward). With this information it is possible 10 affirm that the mean acceleration vector of the rover during the tour was: Note: We assumed that the Perseverance rover's motion was completely vertical and used a traditional frame, with the vertical "y" positive axis pointing up. a) amed =0.1927 m/s2 ? %3D b) amed 0.0963 m/s2 |3D c) aed -0.0963 m/s? d) aed= 0.9634 m/s? 3
Gravitational force
In nature, every object is attracted by every other object. This phenomenon is called gravity. The force associated with gravity is called gravitational force. The gravitational force is the weakest force that exists in nature. The gravitational force is always attractive.
Acceleration Due to Gravity
In fundamental physics, gravity or gravitational force is the universal attractive force acting between all the matters that exist or exhibit. It is the weakest known force. Therefore no internal changes in an object occurs due to this force. On the other hand, it has control over the trajectories of bodies in the solar system and in the universe due to its vast scope and universal action. The free fall of objects on Earth and the motions of celestial bodies, according to Newton, are both determined by the same force. It was Newton who put forward that the moon is held by a strong attractive force exerted by the Earth which makes it revolve in a straight line. He was sure that this force is similar to the downward force which Earth exerts on all the objects on it.
Given data:
Initial velocity (V0) = 150 km/h
Final velocity (V) = 5 km/h
Displacement = 9 km (downward)
Required:
The mean acceleration vector
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