A 20 Kg-Book Is at Rest on a Frictionless Horizontal Floor

question 72

Multiple Choice

A 2.0 kg-book is at rest on a frictionless horizontal floor. You are applying a 10 N downward force, on the book, at an angle of 30 ^o from the vertical. The acceleration of the book is

• A) 5.0 m/s².
• B) 2.5 m/s².
• C) 1.0 m/s².
• D) 9.8 m/s².
• E) 0 m/s².

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