Practice Quiz

Praxis II General Science

Category - Physics

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Which of the following describes a graph of velocity of an object is moving at a constant velocity?
  1. A line with a slope of zero.
  2. A line with a slope of 1.
  3. A line with a negative slope.
  4. A line with a steadily increasing slope.
  5. A line with a steadily decreasing slope.
Explanation
Answer: A - If an object is moving at a constant velocity, its velocity will have a graph of a line with a slope of zero, otherwise known as a horizontal line. The slope must be zero because there is no change in the velocity. A non-zero slope would mean the velocity is changing.
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