A football is thrown vertically with an initial velocity of 33m/s. Calculate the velocity of the ball when it’s height increased 5m

Question

A football is thrown vertically with an initial velocity of 33m/s. Calculate the velocity of the ball when it’s height increased 5m

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Helga 4 years 2021-07-25T20:31:11+00:00 1 Answers 19 views 0

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  1. Edana
    0
    2021-07-25T20:32:55+00:00
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    The final velocity becomes 31.48 m/s

    Explanation:

    Given:

    Initial velocity, u = 33 m/s

    Height, h = 5m

    Final velocity, v = ?

    According to Newton’s law:

    v² – u² = 2gh

    where,

    g is the acceleration due to gravity and

    g = 9.8 m/s²

    On substituting the values we get:

    v^2 - (33)^2 = 2 X -9.8 X 5\\\\v^2 - 1089 = -98\\\\v^2 = 991\\\\v = 31.48 m/s

    Therefore, the final velocity becomes 31.48 m/s

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )