Answer:
A lunar eclipse occurs when Earth blocks the light going to the moon. A solar eclipse occurs when the moon blocks the light coming from the sun.
Explanation:
This is a bit too broad. Maybe this is something to google up
Force = mass * acceleration
F = 15 *8 = 120 Newton
The kinetic energy K = 0.5 * m * v² must be equal to the potential energy U = m * g * h.
m mass
v velocity
h height
g = 9.81m/s²
The mass m cancels out:
0.5 * v² = g * h
Solve for height h and transform to distance traveled.
(sin (4°) = height / distance)
It is an example of liquid. if thats what you are asking for...