There are various methods to measure acceleration due to gravity. At Higher level all rely on one of the equations of motion ... Providing the object does not build up too much speed and air ...

They will use Vernier force and acceleration sensors to understand forces and integrate sensor data into their game, enhancing realism and understanding of forces and motion ... object. MS-PS3-1: ...

These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still. Acceleration is shown by a straight rising line. Deceleration is shown by a straight ...