A student designs a gravity experiment. She will time how long it takes different objects to fall from her school's roof to the ground. She will use three objects: a 2-foot-long board, a toy car, and a paper bag. What is wrong with her experiment's design? (1 point) The school roof is not tall enough to test the effect of gravity on different objects. Gravity will not affect how long it takes for the objects to fall to the ground. The experiment does not test enough objects. The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.

The key flaw in this experiment's design is that the objects do not have the same size, shape, or mass. This means that any variations in how long it takes for them to reach the ground cannot be reliably linked to the force of gravity alone. Other factors, such as air resistance and shape, could influence drop times, making it impossible to draw accurate conclusions about the effects of gravity. For a meaningful experiment, the student could choose objects with similar shapes and sizes but different weights, or utilize a drop mechanism that ensures all objects are released in a manner that minimizes influence from factors other than gravity. This way, she can observe more clearly how gravity interacts with the different weights!