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: Option D
D. II and III only
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.
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![A ball bearing is projected vertically upwards from the ground with a velocity of 15ms‾¹. Calculate the time taken by the ball to return to the ground [g = 10ms‾²]](https://erudites.ng/wp-content/plugins/contextual-related-posts/default.png "A ball bearing is projected vertically upwards from the ground with a velocity of 15ms‾¹. Calculate the time taken by the ball to return to the ground [g = 10ms‾²]")
