Forces and motion

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Question 20
Medium

A student investigated how the terminal velocity of steel spheres falling through a viscous liquid varies with their diameter.

The student plotted the results on a graph, shown below, but did not finish drawing the line for diameters larger than 6 mm6\text{ mm}6 mm.

A grid showing 'Terminal velocity in centimetres per second' on the y-axis from 0 to 50, with major grid lines at intervals of 10 and minor grid lines at intervals of 1. The x-axis is labeled 'Diameter of sphere in millimetres' and ranges from 0 to 10, with major grid lines at intervals of 2 and minor grid lines at intervals of 0.2. A straight line is drawn on the grid starting at point (1, 7) and ending at point (6, 32).

Estimate the terminal velocity for a steel sphere with a diameter of 9 mm9\text{ mm}9 mm.

Show how you obtain your answer.

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Forces and motion Questions

  1. GCSE
  2. /Physics
  3. /Forces and motion