Marcus wants to test the effect of gravity on objects with different masses. He drops two footballs from a first-floor window, a second-floor window, and a third-floor window. In each case, he times how long it takes the footballs to reach the ground. What is wrong with his experimental design?
The main issue with Marcus's experimental design is that he is only dropping footballs to test the effect of gravity on objects with different masses. However, since both footballs are of the same mass, he is not actually testing the effect of gravity on objects with different masses. To address this issue, Marcus should choose objects with different masses, such as a football and a baseball, or a football and a tennis ball, and compare their time of fall. Additionally, to ensure accurate and reliable results, Marcus should repeat the experiments multiple times and take the average time of fall for each object.
