(a)[4]
Show that the velocity of the water as it hits the rocks is $17\ \text{m s}^{-1}$.
(b)[3]
Calculate the force exerted on the falling water by the rocks. Ignore any splashing.
Physics 0625 · IGCSE · Momentum
Momentum — practice question
Fig. 3.1 illustrates water moving at a very low speed as it goes over a cliff edge. The diagram labels the cliff edge, water, rocks, and a vertical height of 15 m. The water falls 15 m onto the rocks below.
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