Three objects of masses 1.0 kg, 2.0 kg, and 3.0 kg, are located ...

[bcretired]

Three objects of masses 1.0 kg, 2.0 kg, and 3.0 kg, are located at (0.0 m, 0.0 m), (1.0 m, 1.0 m), and (2.0 m, -2.0 m), respectively. What is the location of the center of mass of this system?
 
  A) (1.3 m, 0.67 m)
  B) (1.3 m, -0.67 m)
  C) (-1.3 m, 0.67 m)
  D) (-1.3 m, -0.67 m)

Question 2

What other force balances the downward pull of gravity on a NASA satellite while it is in orbit around Earth?
 
  A) The velocity.
  B) Centrifugal force.
  C) The acceleration.
  D) A balancing force is not needed because gravity doesn't act on the satellite.
  E) There is no balancing force--gravity is the only force on the satellite.

[livaneabi]

Answer to Question 1

B

Answer to Question 2

E