Given: m (mass of the body in question) = 200 g (0.2 kg); h (height at which the body is located) = 2 m; V (the speed that the body under consideration has) = 10 m / s.
Reference data: g (acceleration due to gravity) ≈ 10 m / s2.
1) Kinetic energy of the body: Ek = 0.5 * m * V ^ 2 = 0.5 * 0.2 * 10 ^ 2 = 10 J.
2) Potential energy: En = m * g * h = 0.2 * 10 * 2 = 4 J.
3) Total mechanical energy: Ecomplete. = Ek + En = 10 + 4 = 14 J.
Answer: The body in question has a total mechanical energy of 14 J.
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