A ball is projected horizontally from the top of a tower. Neglecting air resistance, which of the following statements about its motion is/are correct? I. Vertical acceleration on the ball decreases as it falls II. The vertical force on the ball remains constant III. The vertical speed of the ball increases as it falls
A. I only B. II only C. I and II only D. II and III only
Correct Answer: D
Explanation
The body while coming down is acted upon by acceleration due to gravity, hence, the vertical force is constant. Also, at maximum height, the vertical velocity is 0 and then increases as the body comes downward.
