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 its 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:

When an object moves in a positive direction and slows down, its velocity decreases. Acceleration, the rate of velocity change, is negative in this case as final velocity < initial velocity.

Answer:

D. negative acceleration