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1 May, 07:50

A ball is thrown horizontally from a cliff and hits the ground 4 seconds later 40

meters from the base of the cliff. How fast was the ball thrown?

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Answers (1)
  1. 1 May, 08:01
    0
    10 m/s

    Explanation:

    Given:

    Δx = 40 m

    t = 4 s

    aₓ = 0 m/s²

    Find: v₀ₓ

    x = x₀ + v₀ₓ t + ½ aₓ t²

    40 m = v₀ₓ (4 s) + ½ (0 m/s²) (4 s) ²

    v₀ₓ = 10 m/s
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