Gwen Releases a Rock at Rest from the Top of a 50-M

question 33

Multiple Choice

Gwen releases a rock at rest from the top of a 50-m tower.If g = 9.8 m/s² and air resistance is negligible,what is the speed of the rock as it hits the ground?

• A) 28 m/s
• B) 31 m/s
• C) 56 m/s
• D) 784 m/s

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