A student in Barbados drops a coconut from rest and it falls freely under gravity. Which equation would be used to find the velocity after falling a known distance s?

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Question

A student in Barbados drops a coconut from rest and it falls freely under gravity. Which equation would be used to find the velocity after falling a known distance s?

Accepted Answer

v² = u² + 2as — Award 1 mark for identifying the equation that relates velocity, initial velocity, acceleration and displacement without requiring time. A is incorrect — requires time. B is incorrect — finds displacement, not final velocity directly. D is incorrect — requires both time and final velocity.

Answer

s = ut + ½at²

Answer

v = u + at

Answer

s = (u + v)t/2

Answer

v² = u² + 2as

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