The same constant force is used to accelerate two carts of the same mass, initially at rest, on horizontal frictionless tracks. The force is applied to cart A for twice as long a time as it is applied to cart B. The work the force does on A is WA; that on B is WB. Which statement is correct?
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WA = WB.
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W
A =
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W
B.
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WA = 2 WB.
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WA = 4 WB.
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WB = 2 WA.