Logan observes a paramecium under a microscope. the eye piece of the microscope has a horizontal scale marked in mm. The paramecium starts at the 68 mm mark and ends at the 45 mm mark. what is the paramecium's displacement?

The objects do not reach terminal velocity         there is not enough time from the time the object falls from when it hits the ground to achieve terminal velocity. an object must be placed higher to achieve terminal velocity in order to be in free fall.