Week 2 Quiz Physics .docx - Quiz2Physics...

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Quiz 2 Physics  If a subway train is moving to the left (has a negative velocity) and then comes to a stop, what is the  direction of its acceleration? Is the acceleration positive or negative? Correct answer*** To the right. Positive. b . To the right. Negative. c . To the left. Positive. d . To the left. Negative.
A student writes, “ A bird that is diving for prey has a speed of   10 m/s   .” What is wrong with the student’s  statement? What has the student actually described?
If the total displacement of an object is zero, the average speed of the object will be zero.

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