dylalove2943 dylalove2943

27-02-2024
Physics

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A man drops a 10kg rock from the top of a 5m ladder. What is its kinetic energy on reaching the ground? What is its speed just before it hits the ground?
A) KE = 490 J, Speed = 14.0 m/s
B) KE = 490 J, Speed = 7.0 m/s
C) KE = 245 J, Speed = 7.0 m/s
D) KE = 245 J, Speed = 14.0 m/s

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