Multiple Choice Item: 1 point value

Question Overview:In this question, you are required to select the correct verbal expression of I the scientific data. In order to answer this question, you must determine the pattern of the data and relationships among the variables in the chart. This question tests your skill at performing simple calculations to represent in words a scientific concept.

Answer Rationale:

Option A is incorrect. If you chose option A, you may have focused on the data which showed that doubling the net force increases acceleration by 4 times. This data is shown in the second and third rows of the table. However, a closer look at all of the variables in this table shows that in the case of the second and third rows, the mass is not held constant.

Option B is incorrect. If you chose option B, you may have focused on the data which shows that acceleration can decrease by 2 times. This data is shown in the first and second rows of the table and also in the third and fourth rows of the table. However, a closer look at all of the variables in the table shows you that this decrease in acceleration by 2 times only occurs when net force is held constant.

Option C is correct. If you chose option C, you noticed that in the first two rows of the table, a doubling of the mass decreases the acceleration by 2 times when the object's mass is held constant. You may have also noticed that this same pattern also occurs in the last 2 rows of the table.

Option 0 is incorrect. If you chose option D, you may have focused on the pieces of data that show the doubling of the mass and the net force held constant. However, a closer look at all of the variables shows that acceleration actually decreases by 2 times when the mass doubled and the net force is constant.

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