SUBJECT:MECHANICAL ENGINEERING Q1: A 10 kg body falls from rest with negligible interaction with its surroundings (no friction). Determine its velocity after it falls 3.8 m. Use the 1st Law of Thermo to solve this problem. You may use your knowledge of kinematics or dynamics to verify your solution but the solution must be derived from the 1st Law equation. Ans. 8.64 m/s (Is it ∆ U=-W ? Show your work)

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