Question 39 Answer and Explanation _ACT June 2017 Form 74C Science Section

39. Based on Figures 1, 2, and 3, is it reasonable to conclude that the drag on the steel ball was directly proportional to the depth of the ball?

A. Yes; both the depth and the drag increased only.

B. Yes; both the depth and the drag increased and then gradually approached a constant value.

C. No; the depth increased only, whereas the drag increased and then approached a constant value.

D. No; the depth increased and then approached a constant value, whereas the drag increased only.

Answer and Explanation

Your Answer is

Correct Answer is C

Explanation

It can be seen from figure 3 that as time increases, the depth also increases;

From figure 1 & figure 2, it can be seen that as time increases, drag first Increase, and then keep constant;

So the statement in the question stem does not match the experimental data, you should choose no