work, Physics

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1. A child pulls a toy car weighing 0.20 kg across a smooth floor by means of a string attached to it. If the string makes an angle of 60° to the floor and the child pulls with a force of 2.0 N, then the amount of work he does in pulling the car a distance of 5.0 m is...
A. 5.0 J
B. 10.0 J
C. 12.7 J
D. 17.3 J

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