A rock is thrown upward with an initial velocity,

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

7. A rock is thrown upward with an initial velocity, v(t)v(t), of 18 m/s18 \mathrm{~m} / \mathrm{s} from a height, h(t)h(t), of 45 m . If the acceleration of the rock is a constant −9 m/s2-9 \mathrm{~m} / \mathrm{s}^{2}, find the height of the rock at time t=4t=4.

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