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Author Question: While an object is in projectile motion (with upward being positive) with no air resistance A) ... (Read 75 times)

HudsonKB16

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on: Jul 29, 2018
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.


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potomatos

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Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

B


HudsonKB16

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Reply 2 on: Jul 29, 2018
Gracias!

duy1981999

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Reply 3 on: Yesterday
Wow, this really help

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