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22 December, 20:23

A bullet is fired vertically upward from a gun with an initial velocity of 225 m/s. How high does the bullet go in meters? [Ignore air resistance]

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  1. 22 December, 22:39
    0
    h = 2582.9 m

    Explanation:

    bullet kinematics: bullet moves with uniformly accelerated movement in freefall

    The negative sign in the equation indicates that the acceleration (g) is in the direction opposite to the movement of the bullet.

    v f₁²=v₀²-2g*h₁ Equation (1))

    h: hight in meters (m)

    v₀: initial speed in m/s

    vf: final speed in m/s

    Known data

    v₀ = 225 m/s

    g = 9.8 m/s² : acceleration due to gravity

    Problem development

    When the bulletl reaches the maximum height the final speed is equal to zero. vf=0

    We replace data in the equation (1)

    v f₁²=v₀²-2g*h₁

    0 = (225) ²-2*9.8*h

    2*9.8*h = (225) ²

    h = (225) ² / (2*9.8)

    h = 2582.9 m
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