Could someone help with these two answers please?

If the air inside a balloon exerts a force of 1.5 N on an area of 0.5 m², what is the pressure inside the balloon?
A. 0.5 N/m²
B. 1.5 N/m²
C. 2.5 N/m²
D. 3 N/m²

As your airplane takes off from an airstrip on the ground and rises 30,000 feet into
the sky, what happens to the air pressure on the outside of the airplane?
A. The air pressure decreases.
B. The air pressure increases.
C. The air pressure stays the same.
D. More information is needed.

Question

Could someone help with these two answers please?

If the air inside a balloon exerts a force of 1.5 N on an area of 0.5 m², what is the pressure inside the balloon?
A. 0.5 N/m²
B. 1.5 N/m²
C. 2.5 N/m²
D. 3 N/m²

 As your airplane takes off from an airstrip on the ground and rises 30,000 feet into 
the sky, what happens to the air pressure on the outside of the airplane? 
A. The air pressure decreases.
B. The air pressure increases.
C. The air pressure stays the same.
D. More information is needed.

anonymous · Answer

For first one...do you know what is the meaning of PRESSURE??

anonymous · Answer

Pressure is a force applied on an object right?

anonymous · Answer

pressure is the force per unit area....P=F/A so divide force by area to get answer to first question

anonymous · Answer

its not force applied on an object.. its how much force is coming on a unit area.. !!

anonymous · Answer

So the answer would be D? 3N/m2

anonymous · Answer

yup

anonymous · Answer

ah thanks I get it now.

anonymous · Answer

in the second one,when an airplane takes off, nothing happens to air pressure..what happens is that..pressure on the lower side of wings becomes greater than the upper one and it rises due to pressure difference......in the question,its not specified on which side of wing....so overall air pressure remains the same

anonymous · Answer

Thank you so much!

anonymous · Answer

my pleasure