An object is thrown vertically into the air. In this case air resistance affects motion. Compared with its time for ascent, the time for its descent is
A)shorter.
B)the same.
C)longer.
D)need more information

Question

Quizplus · Accepted Answer

When an object is thrown vertically into the air, air resistance affects its motion during both the ascent and the descent. However, since the object is moving against gravity during the ascent, the upward force exerted by air resistance is opposing gravity and slowing down the object. This means that the time for ascent will be longer than it would be without air resistance. During the descent, the object is moving with gravity, and the downward force exerted by air resistance is helping gravity and therefore increasing the object's speed. This means that the time for descent will be shorter than it would be without air resistance. Overall, the time for descent is shorter than the time for ascent.

An Object Is Thrown Vertically into the Air