Answer:

Explanation:
As we know that the speed of the rocket is v1 and v2 at the bottom and top of the window
then we will have



also we know that


now we have

also we have

now if the sill of the window is at height 8 m from the ground then we have



Answer:
Hey
The reason these "space movies" are wrong is because objects in "space" (not in a "space" craft) can't catch on fire because there is no air in "space".
Answer:
Explanation:
Average acceleration
is the variation of velocity
over a specified period of time
:
Where:
being
the initial velocity and
the final velocity (according to the information given from the described graph)

Then:
Supposing the runner is condensed to a point and moves upward at 2.2 m/s.
It takes a time = 2.2/g = 2.2/9.8 = 0.22 seconds to increase to max height.
Now looking at this condition in opposite - that is the runner is at max height and drops back to earth in 0.22 s (symmetry of this kind of motion).
From what height does any object take 0.22 s to fall to earth (supposing there is no air friction)?
d = 1/2gt²= (0.5)(9.8)(0.22)²= 0.24 m