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.
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