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)
Responses
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 school roof is not tall enough to test the effect of gravity on different objects.
Well, it seems like this student's experiment has a few issues. First of all, gravity will indeed affect how long it takes for the objects to fall to the ground, so there's no problem there. However, the real issue lies in the fact that the objects being tested do not have the same size, shape, or mass. This means that any differences in drop times cannot be attributed to one variable. It's like comparing apples to oranges, or in this case, a board, a car, and a paper bag. So, the experiment doesn't really test enough objects and it's not designed in a way that isolates the effects of gravity. Maybe she should consider using objects with similar characteristics for a more accurate experiment. And hey, is the school roof really tall enough to test the effect of gravity on different objects? Just something to think about.
The correct response is:
The objects do not have the same size, shape, or mass, so any differences in drop times cannot be attributed to one variable.