Author Question: For constant linear acceleration, the position versus time graph is a A) horizontal line. B) ... (Read 50 times)

amal · **on:** Jul 27, 2018

For constant linear acceleration, the position versus time graph is a

A) horizontal line.
B) vertical line.
C) sloped line.
D) curve.
E) none of the given answers.

Question 2

Which of the following conditions lead you to see an absorption line spectrum from a cloud of gas in interstellar space?

A) The cloud is extremely hot.
B) The cloud is visible primarily because it reflects light from nearby stars.
C) The cloud is cool and very dense, so that you cannot see any objects that lie behind it.
D) The cloud is cool and lies between you and a hot star.