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3.2.5 Motion under gravity and projectiles (A-level only)

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Question 23

A cricket ball is hit from the ground with an initial velocity of k(2i+5j)ms−1k(2\mathbf{i} + 5\mathbf{j})\text{ms}^{-1}k(2i+5j)ms−1, where k k\,k is a constant. The maximum height above the ground reached by the ball is 50 m.

a.

Find the exact value of kkk.

[3]
b.

Find the horizontal distance from the point of projection to the point where the ball strikes the ground.

[6]

3.2.5 Motion under gravity and projectiles (A-level only) Questions

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