A boy kicks a rubber ball at an angle of 200 above level ground toward a 3.0-m high vertical wall that is 12 m from where the boy kicked the ball. With what initial speed must the boy kick the ball so that it barely clears the wall? (Assume that g = 9.81 m/s2.)   a. 21 m/s     b. 27 m/s     c. 18 m/s     d. 24 m/s     e. 15 m/s

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Chapter4: Motion In Two Dimensions
Section: Chapter Questions
Problem 4.23P: A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Hall the...
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  1. A boy kicks a rubber ball at an angle of 200 above level ground toward a 3.0-m high vertical wall that is 12 m from where the boy kicked the ball. With what initial speed must the boy kick the ball so that it barely clears the wall? (Assume that g = 9.81 m/s2.)

      a.

    21 m/s

        b.

    27 m/s

        c.

    18 m/s

        d.

    24 m/s

        e.

    15 m/s

     
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