Answer:

Explanation:
The first box has the following equation of equilibrium:



The coefficient of friction is:



There is a net acceleration, when horizontal pushing force is increased:




Answer:
increases.
Explanation:
As a ball falls freely towards the ground, it's kinetic energy increases. If the kinetic energy increases, that means the object hasn't hit the bottom yet. If the ball continues to fall freely towards the ground, the air gives it more pressure, after that the pressure begins to increase.
Answer:
Pluto is no longer considered a planet as a result of it's small size on the IAU scale.
Explanation: