Question

multiple choice question a rock at rest is dropped from the rooftop of a tall building. the acceleration of the rock is around 10 m/s² downwards. the distance fallen by the rock during a 1 second time interval is largest during the last second of falling. always the same throughout the fall. largest during the first second of falling. undetermined without more information about the time of the fall.

Explanation:

A freely falling rock (with constant downward acceleration) gains speed as it falls. Since distance covered in a time interval depends on average speed during that interval, the average speed is highest in the last second (as the rock is moving fastest then), so the distance fallen is largest in the last second.

Answer:

largest during the last second of falling.