To escape Mars, rock fragments would have to reach its escape velocity of 5.0 km/s, and this would most likely happen over a distance of about 4.0 m during the impact.

a)What would be the acceleration, in m/s, of such a rock fragment?

b)What would be the acceleration, in g's, of such a rock fragment?

c) How long would this acceleration last?

d)In tests, scientists have found that over 40% of Bacillius subtilis bacteria survived after an acceleration of 450000g. In light of your answer to part A, can we rule out the hypothesis that life might have been blasted from Mars to Earth?

Question

To escape Mars, rock fragments would have to reach its escape velocity of 5.0 km/s, and this would most likely happen over a distance of about 4.0 m during the impact.

a)What would be the acceleration, in m/s, of such a rock fragment?

b)What would be the acceleration, in g's, of such a rock fragment?

c) How long would this acceleration last?

d)In tests, scientists have found that over 40% of Bacillius subtilis bacteria survived after an acceleration of 450000g. In light of your answer to part A, can we rule out the hypothesis that life might have been blasted from Mars to Earth?

anonymous · Answer

Don't quite know how or where to start on this problem. Any help would be much appreciated

anonymous · Answer

initial velocity,u=0
final velocity,v=5 km/s=5000 m/s
distance covered to reach this velocity, s=4 m
now use the equation:----->   v^2 - u^2 =2as
where a is the acceleration

anonymous · Answer

thanks for responding. where did you get this equation from "v^2 - u^2 =2as"?

anonymous · Answer

this equation is one of the equations of motion given by newton.search for equations of motion by newton on google or in any book.u will find them