In Part 1 of the lab activity, you did not assume that the center of mass was at the 50 cm mark. Instead, you determined the location of the center of mass of the meter stick to eliminate this source of error. Let's say that the actual center of mass is at the 49 cm mark. If you did not measure this and assumed it was at 50 cm, what kind of error would have been introduced

Arunner is jogging at a steady 3.6 km/hr. when the runner is 2.9 km from the finish line, a bird begins flying from the runner to the finish line at 14.4 km/hr (4 times as fast as the runner). when the bird reaches the finish line, it turns around and flies back to the runner. even though the bird is a dodo, we will assume that it occupies only one point in space, i.e., a zero-length bird. how far does the bird travel? (b) after this first encounter, the bird then turns around and flies from the runner back to the finish line, turns around again and flies back to the runner. the bird repeats the back and forth trips until the runner reaches the finish line. how far does the bird travel from the beginning? (i.e. include the distance traveled to the first encounter)