A student drops an object from a fourth floor window the velocity of the objects is measured at 39.28m/s 3 seconds later what is the acceleration of object

Acceleration due to gravity 9.8 m/s^2

Explanation:

When an object drops down towards earth from certain height than it comes down with an acceleration of 9.8 m/s^2 which is constant throughout the dropping until the falling objects hits the ground and coming to rest.