A pair of identical balls is connected by a massless rod, and thrown straight up into the air, such that the center of mass of the pair reaches a maximum height of 13.2 m above the point of release. On the way up, when the center of mass is at 6.6 m above to point of release, the velocity of one ball is measured to be 7.7 m/s downward. What is the velocity of the other ball at this time? Ignore air resistance.
A. 19.1 m/s up
B. 3.7 m/s up
C. 8.0 m/s up
D. 0.3 m/s up
E. 0.3 m/s down
F. 3.7 m/s down
A. 19.1 m/s up
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Fill in the blank(s) with the appropriate word(s).
Nearly all of the objects that you can see in this photograph are
A) planets. B) stars. C) galaxies. D) astronomical units.
Explain the conservation laws in the context of stellar astronomy
What will be an ideal response?