A 25-Kg Stone Is Released from Rest and Falls Toward Earth

question 44

Multiple Choice

A 2.5-kg stone is released from rest and falls toward Earth. After 4.0 s, the magnitude of its momentum is:

• A) 98 kg · m/s
• B) 78 kg · m/s
• C) 39 kg · m/s
• D) 24 kg · m/s
• E) zero

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