A-LevelPhysicsKinematics9702/12 · May/June 2023 · Q171 Mark
A block is released from rest and slides a distance x down a straight slope. The slope is at an angle θ to the horizontal. [Figure 17.1] The slope is frictionless and air resistance is negligible. The acceleration of free fall is g. Which expression gives the final speed of the block?
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Asqrt(gx sin θ / 2)
Bsqrt(2gx sin θ)
Csqrt(2gx)
D2gx sin θ
✓ Correct answer
B: sqrt(2gx sin θ)
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