Question

select the correct answer. an airplane is flying at a constant speed in a positive direction. it slows down when it approaches the airport where it is going to land. which term describes the slowing of the plane? a. stationary b. positive velocity c. positive acceleration d. negative acceleration e. constant velocity

Explanation:

Acceleration is the rate of change of velocity. When an object slows down while moving in a positive - direction, its acceleration is negative as it is decreasing its velocity. Stationary means not moving. Positive velocity just indicates motion in a positive direction but not slowing down. Positive acceleration means speeding up. Constant velocity means no change in speed or direction.

Answer:

D. negative acceleration