Raven throw a baseball directly downward from a terrace froma speed of 5.0 m/s. How fast it will be moving when it hits the path way 3.0 m b

Question

Raven throw a baseball directly downward from a terrace froma speed of 5.0 m/s. How fast it will be moving when it hits the path way 3.0 m below

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Hồng Cúc 5 years 2021-08-18T03:38:34+00:00 1 Answers 19 views 0

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  1. thuthuy
    0
    2021-08-18T03:39:52+00:00
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    Answer:

    The speed of the ball at this distance is 9.15 m/s

    Explanation:

    Given;

    initial speed of the baseball, U = 5.0 m/s.

    distance traveled along the path way, h = 3 m

    final speed of the baseball at this distance, V = ?

    The baseball is falling under the influence of gravity.

    Acceleration due to gravity, g is positive, since the baseball is falling towards its direction.

    g = 9.8 m/s²

    Apply the third kinematic equation;

    V² = U² + 2gh

    V² = 5² + 2 x 9.8 x 3

    V² = 25 + 58.8

    V² = 83.8

    V = √83.8

    V = 9.15 m/s

    Therefore, the speed of the ball at this distance is 9.15 m/s

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