Help please I will give brainliest

it's b

Explanation:

I got my mom to helps so trust me

B When cold air moves into a warm air mass.

Explanation: As a cold front moves into an area, the heavier (more dense) cool air pushes under the lighter (less dense) warm air, causing it to rise up into the troposphere.

your answer is rna to the question.

acceleration= v2-v1/t so 8m/s-3m/s / 3s =to 8/3 or

2.67 m/s^2

hope i

-lavira: )