A ball is thrown vertically into the air. Because of air resistance, its speed when it returns to its starting level compared with its initial speed is
A)less.
B)the same.
C)more.

Question

Quizplus · Accepted Answer

When an object is thrown vertically upward, it experiences a negative acceleration due to gravity. As a result, its velocity decreases until it reaches its maximum height where its velocity is momentarily zero. As the ball falls back down, it continues to experience acceleration due to gravity but this time in the opposite direction, causing its velocity to increase in the downward direction. However, the air resistance opposes the motion of the ball and slows it down. Therefore, when the ball returns to its starting point, its velocity is less than its initial velocity because of the effect of air resistance.

A Ball Is Thrown Vertically into the Air