d = at The displacement d of an object in a vacuum, starting from rest with an acceleration a, can be found using the formula above, where t is the time the object has been moving. A physics student uses the formula to determine the displacement of an object in a vacuum accelerating from rest for time t and an object with the same acceleration from rest for time 2.5t. What is the ratio of the displacement of the object that accelerated for more time to th dien