Question

An airplane travels in a straight line directly from Washington, D.C., to Atlanta, Georgia. Ignoring take off and landing, what is constant throughout the majority of the flight?
A. distance
B. time
C.velocity
D.temperature

Answer 1

Correct answer choice is:

Velocity.

Explanation:

The velocity remains constant throughout the journey because the airplane can not reduce its velocity to maintain the balance in the air and to keep on moving.

In terms of plane cruising, the two central forces changing its velocity ahead are pull and thrust. At a fixed height, when the force of thrust equals the opposite force of resistance, then the plane will undergo consistent movement in one direction. This can be additionally defined by Newton's First Law.

Answer 2

Answer:

Velocity

Explanation:

As we know that for the equilibrium of flight in air the force due to air pressure must counterbalance the weight of flight.

Now here the force due to air pressure is generated by the condition of air flow above the wings

Now in order to maintain a sufficient pressure on the wings so that it will counterbalance the weight it requires a fixed flow rate of air above and below the wings

Now in order to maintain this flow speed of air the velocity of flight must have to maintain at a fixed value.

So here we can say for any flight to move from one point to other its velocity in air must remains constant throughout the motion.