A truck moving at 20 mph shoots a soccer ball at 20 mph in the opposite direction. How fast is the soccer ball moving? Explain

A truck moving at 20 mph shoots a soccer ball at 20 mph in the opposite direction. How fast is the soccer ball moving? Explain

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  1. Answer:

    Speed of the soccer ball with respect to ground is ZERO

    Explanation:

    As we know that truck is moving with speed 20 mph

    Now a soccer ball is shoot from truck with respect to the motion of truck in opposite direction

    The relative speed of the soccer ball is

    [tex]v_{bt} = 20 mph[/tex]

    now we know that

    [tex]v_{bt} = v_b – v_t[/tex]

    so we have

    [tex]-20 mph = v_b – 20[/tex]

    so we have

    [tex]v_b = 0[/tex]

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