A) 40 m/s
B) 20 m/s
C) 10 m/s
D) \[10\sqrt{30}\,m/s\]
Correct Answer: A
Solution :
If all the forces (enternal) are conservative and there is no external force exerting on the system, then we apply principle of conservation of total mechanical energy of the system. According to conservation of energy, or orYou need to login to perform this action.
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