P2: Orbital Motion

Question 1

h is twice the rate that ___ vector sweeps out are and is ___ divided by ___ of the system

Answer 1

separation/angular momentum/reduced mass

Question 2

kepler’s second law

Answer 2

if two bodies revolve about each other under the influence of a central force then the line joining them sweeps out areas in equal times

Question 3

kepler’s first law

Answer 3

each planet moves in an ellipse with the sun at one focus

Question 4

a parabola is either an infinitely long ___ or a hyperbola with parallel ___

Answer 4

ellipse/asymptotes

Question 5

hyperbolic orbits are ___ as positive velocity remains as r tends to infinity

Answer 5

unbounded

Question 6

parabolic orbits have just enough energy to be ___

Answer 6

unbounded

Question 7

elliptical orbits have complex velocities so orbits are ___ and ___

Answer 7

bound/closed

Question 8

magnitude of velocity sets

Answer 8

E,a,T

Question 9

direction of velocity sets

Answer 9

e and orientation of orbit

Question 10

three confocal elliptical orbits with particle at a point have the same ___ in each orbit just different ___

Answer 10

speed/velocities

Question 11

mean anomaly and area swept out grow ___ with time since periapsis

Answer 11

linearly