Author Question: The orbits of many extrasolar planets detected to date are A) parabolic B) highly elliptical C) ... (Read 32 times)

mp14 · **on:** Jul 27, 2018

The orbits of many extrasolar planets detected to date are

A) parabolic
B) highly elliptical
C) perfectly circular
D) slightly elliptical

Question 2

When a cannon fires a cannonball, the cannon will recoil backward because the

A) momentum of the cannon is greater than the energy of the cannonball.
B) momentum of the cannonball and cannon is conserved.
C) momentum of the cannon is conserved.
D) energy of the cannonball and cannon is conserved.
E) energy of the cannon is greater than the energy of the cannonball.