A Girl Lifts a Ball by Means of a String

question 60

Multiple Choice

A girl lifts a ball by means of a string attached to the ball. The string exerts a 30 newton force on the ball. The ball weighs 20 newtons and has a mass of 2 kilograms. The acceleration of the ball is

• A) 25 m/s².
• B) 15 m/s².
• C) 5 m/s².
• D) zero.
• E) 10 m/s².

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