A vector Quantity has MAGNITUDE and direction, so the ‘what’ is Magnitude.
Answer: The pressure of the air when compressed is 
Explanation:
Boyle's Law: This law states that pressure is inversely proportional to the volume of the gas at constant temperature and number of moles.
(At constant temperature and number of moles)
where,
= initial pressure of gas = 
= final pressure of gas =?
= initial volume of gas = V
= final volume of gas = 
Therefore, the pressure of the air when compressed is
Answer:
A: The kinetic energy of the two vehicles is transferred to potential energy when it stops.
B: The more mass an object has the more kinetic energy it will have.
Explanation:
This may be the right answer for your question but if it isn't my bad.
Answer:
(A) inertia increases.
Explanation:
Inertia is the property of mass that resists change so the mass an object has the greater the inertia
