A ball is thrown vertically upwards from the roof of a building with an initial velocity of 30 m / s. If it stops in the air 220 m above the

Question

A ball is thrown vertically upwards from the roof of a building with an initial velocity of 30 m / s. If it stops in the air 220 m above the ground, what is the height of the building?

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niczorrrr 3 months 2021-08-13T19:52:49+00:00 1 Answers 1 views 0

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    2021-08-13T19:54:28+00:00

    Answer:

    175 m

    Explanation:

    Given:

    y = 220 m

    v₀ = 30 m/s

    v = 0 m/s

    a = -10 m/s²

    Find: y₀

    v² = v₀² + 2a (y − y₀)

    (0 m/s)² = (30 m/s)² + 2 (-10 m/s²) (220 m − y₀)

    y₀ = 175 m

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