Who describe gravity is a force of attraction between all objects with mass in the universe

Acurve connects the data points that are plotted. (physical science chapter 11 motion)

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

The particles that are found in the nucleus of an atom are