In an imaginary atmosphere, air exerts a small force F on any particle in the direction of its motion. A mass m projected upward takes time t₁ to reach maximum height and t₂ to return. Then:
Options

Question

In an imaginary atmosphere, air exerts a small force F on any particle in the direction of its motion. A mass m projected upward takes time t₁ to reach maximum height and t₂ to return. Then:

G1 Physics · Accepted Answer

Here the stated force acts along the motion: upward it reduces the downward deceleration, whereas downward it adds to gravity. Thus ascent takes longer than descent: t₁>t₂. Option B.