Cosmology is the study of the overall structure and evolution of
A) the universe.
B) stars.
C) beauty.
D) galaxies.
Question 2
Fire a cannonball from a cannon and it curves due to gravity. Shine a light from a flashlight and it
A) curves per second the same as the cannonball.
B) follows a straight-line path with no curvature at all.
C) curves half as much as the cannonball.
D) curves slightly, but not as much per second as the cannonball.
Question 3
In a 1-g gravitational field, in 1 s, a light beam will curve beneath a perfectly straight line by
A) much less than 4.9 m.
B) about 4.9 m.
C) much more than 4.9 m.
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