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The problem states that the total mechanical energy E varies partly as the potential energy P and partly as the square of the speed V. This can be written as:

Physics

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Step-by-step solution

2 steps
  1. Formulate the relationship between total mechanical energy (EE), potential energy (PP), and speed (VV).

    The problem states that the total mechanical energy EE varies partly as the potential energy PP and partly as the square of the speed VV. This can be written as:

    E=k1P+k2V2E = k_1 P + k_2 V^2

    where k1k_1 and k2k_2 are constants of proportionality.

  2. Use the given scenarios to set up a system of linear equations for k1k_1 and k2k_2.

    Scenario 1:
    When V=8 m/sV = 8 \, \text{m/s}, $P = 125

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