The S.I. unit for the measure of the pressure is the Pascal (Pa). 1 Pascal corresponds to

We can convert the number given by the problem into Pascal:

And since

, we have
They are both the waste of the sea and land
The kinetic energy of an object is given by:

where
K is the kinetic energy
m is the mass of the object
v is its velocity.
The comet in our problem has a mass of

and a velocity of

, so its kinetic energy is:
It could be stress or strain