O-LevelPhysicsKinematics5054/11 · May/June 2020 · Q171 Mark

A boy is standing by the side of a lake. The boy drops a heavy stone from a height of 2.0 m above the water surface. The acceleration due to gravity is 10 m/s². What is the speed of the stone when it hits the surface of the water?

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A4.5 m/s

B6.3 m/s

C20 m/s

D40 m/s

✓ Correct answer

B: 6.3 m/s

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Topic: Kinematics, O-Level Physics (syllabus 5054). Multiple choice, 1 mark.
Source: O-Level Physics, May/June 2020 Paper 1 Variant 1, question 17.

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