The correct answer is B. How is friction different with different materials?
Explanation
In the graph you can see the time it took each of the materials to descend the ramp, Judas did two tests for each material. In the case of the uncoated wooden block, the decrease was in 4.2 seconds (first test) and 3.9 seconds (second test. In the case of the block wrapped in wax paper, the results were 6.1 seconds (first test) and 6.5 (second test). In the case of the wooden block wrapped in sandpaper, the results were 3.0 seconds (first test) and 3.3 seconds (second test). With the result of his investigation, Judas can ask himself issues related to the particularities of each material, for example, its friction when descending. Therefore, the correct answer is B How is friction different with different materials?
