It has been suggested, and not facetiously, that life might have originated on mars and been carried to earth when a meteor hit mars and blasted pieces of rock (perhaps containing primitive life) free of the surface. astronomers know that many martian rocks have come to earth this way. one objection to this idea is that microbes would have to undergo an enormous, lethal acceleration during the impact. let us investigate how large such an acceleration might be. 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 4.0m during the impact.

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

Acceleration, in m/s, of such a rock fragment =

Explanation:

According to Newton's Third Equation of motion

Where:

is the final velocity

is the initial velocity

a is the acceleration

s is the distance

In our case:

So Equation will become:

Acceleration, in m/s, of such a rock fragment =

it would be kevlar ^^

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia