Physics (AS & A Level) · May / June 2023 · Paper 12 · Question 17

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. [diagram: block on slope, distance x along slope, angle θ] 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?

1. A\sqrt{\frac{gx \sin\theta}{2}}
2. B\sqrt{2gx \sin\theta}
3. C\sqrt{2gx}
4. D2gx \sin\theta

As printed in the paper