If Keiji stands on the roof of a building and drops a basketball, what will happen to the basketball and why? Provide a very short response.
The basketball will fall straight down towards the ground due to gravity. Gravity is a force that pulls objects toward the center of the Earth, and since there are no other significant forces acting on the basketball (assuming no strong winds or other interference), it will move in the direction of that force. As Keiji releases the basketball, it is gravity that accelerates it downwards.