It's still 20 kg. Mass doesn't change according to gravity, only weight changes.
There would be 6 electrons placed on the third energy level.
Answer:
Option (c).
Explanation:
An object when when projected at an angle, will have some horizontal velocity and vertical velocity such that,

is the angle of projection
The horizontal component of the projectile remains the same because there is no horizontal motion. Vertical component changes at every point.
As a projectile falls, vertical velocity increases in magnitude, horizontal velocity stays the same
.
The force on the ship is more than a car