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a) Acrobat B is able to help Acrobat A jump to a greater height by landing nearer to the end of the plank as possible.
b) When Acrobat C replaced Acrobat B, Acrobat A is able to jumped a greater height due to the increased in body mass of Acrobat C as compared to Acrobat B. Hence, Acrobat A is able to jumped higher.
b) When Acrobat C replaced Acrobat B, Acrobat A is able to jumped a greater height due to the increased in body mass of Acrobat C as compared to Acrobat B. Hence, Acrobat A is able to jumped higher.