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28 April, 15:11

A paper airplane with mass 0.1 kg is flying 1.5 m above the ground with a speed of 2 m/s. what is the total mechanical energy of the paper airplane?

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  1. 28 April, 18:46
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    Mechanical (ME) energy, in physical sciences, is the sum of kinetic energy (KE) and potential energy (PE). Below are the calculation in obtaining the energies,

    (1) KE = 0.5mv² = 0.5 (0.1 kg) x (2 m/s) ² = 0.2 J

    (2) PE = md = (0.1 kg) x (1.5 m) = 0.15 J

    (3) ME = KE + PE = 0.2 J + 0.15 J = 0.35 J

    Thus, the mechanical energy is 0.35 Joules.
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