SAT Subject Physics Practice Question 252: Answer and Explanation

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Question: 252

23. An object of mass 2 kg increases in speed from 2 m/s to 4 m/s in 3 s. What was the total work performed on the object during this time interval?

A. 4 J
B. 6 J
C. 12 J
D. 24 J
E. 36 J

Correct Answer: C

Explanation:

Use the work–energy theorem.

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