Question 5 10 points Save Answer When you are trying to understand the motions of planets and stars, and use those motions to find their masses, what do you need to know to interpret measurements of their positions at various times with physical laws. Pick all that apply. Kepler's 3rd Law that T2 = (4712 / GM) 3 where T is the period of the orbit and r its radius Coulomb's Law The Universal Law of Gravitation that F =GmM/r2 The value of the Universal constant of Gravitation G Newton's Second Law that F=ma