O-LevelPhysicsKinematics5054/11 · May/June 2017 · Q51 Mark

A resultant force acts on an object and causes it to move in a straight line. The graph shows how the resultant force varies with time. Which graph is the speed-time graph for the object?

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AGraph showing speed increasing with a decreasing gradient until it flattens at a constant speed.

BGraph showing speed decreasing linearly from a maximum value to zero.

CGraph showing speed increasing linearly, then remaining constant.

DGraph showing speed decreasing with a curved line from a maximum value to zero.

✓ Correct answer

A: Graph showing speed increasing with a decreasing gradient until it flattens at a constant speed.

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Topic: Kinematics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2017 Paper 1 Variant 1, question 5.

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