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Resultant force and glider acceleration
The investigation changed the resultant force acting on a glider and measured the glider's acceleration. Table 1 gives repeated acceleration measurements and mean accelerations for resultant forces from 0.20 N to 0.98 N.
Write a conclusion for this investigation.
Use the data in Table 1.
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Marking points
- 1 Conclude that resultant force and acceleration are directly proportional, or that a larger resultant force gives a greater acceleration.
Full-mark answer
The resultant force is directly proportional to the acceleration: as the resultant force increases, the acceleration increases.
Why this answer loses marks
Force and acceleration are related.
This is too vague. The conclusion must say that acceleration increases with force, ideally that they are directly proportional.