While an object is in projectile motion (with upward being ...

[HudsonKB16]

While an object is in projectile motion (with upward being positive) with no air resistance
 
  A) the horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to zero.
  B) the horizontal component of its velocity remains constant and the horizontal component of its acceleration is equal to -g.
  C) the vertical component of its velocity remains constant and the vertical component of its acceleration is equal to -g.
  D) the horizontal component of its velocity remains constant and the vertical component of its acceleration is equal to -g.
  E) the vertical component of both its velocity and its acceleration remain constant.

Question 2

A satellite in a circular orbit of radius R around planet X has an orbital period T. If Planet X had one-fourth as much mass, the orbital period of this satellite in an orbit of the same radius would be
 
  A) T B) 2T. C) T/2. D) 4T. E) T/4.

[potomatos]

Answer to Question 1

D

Answer to Question 2

B

[HudsonKB16]

Excellent

[AISCAMPING]

TYSM