A stone rises to a maximum height of when projected vertically upward

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

A stone rises to a maximum height of

45\,\text{m}

when projected vertically upward. Determine its initial speed. (Take

g = 9.8\,\text{m}\,\text{s}^{-2}

.) (a)

20.9\,\text{m}\,\text{s}^{-1}

(b)

42.0\,\text{m}\,\text{s}^{-1}

(c)

29.6\,\text{m}\,\text{s}^{-1}

(d)

30.0\,\text{m}\,\text{s}^{-1}

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