Chapt 9 Gravity

Question 1

Gravity of a planet

Answer 1

g : G(M/r^2)

Question 2

Orbital speed or velocity

Answer 2

(V of orbit)^2 : GM/r

Question 3

Kepler’s First Law

Answer 3

Planets orbit the Sun along an elliptical path where the Sun is at one of the two foci of the ellipse

Question 4

Kepler’s Second Law

Answer 4

Area 1 = Area 2

Question 5

Kepler’s Third Law

Answer 5

(Orbital period)^2 proportional to (orbital radius)^3

Question 6

Newton’s law of universal gravitation

Answer 6

Fg : G(m1m2)/r^2