Question: You pull a box with a constant force across a frictionless table using an attached rope held horizontally. If you now pull the rope with

You pull a box with a constant force across a frictionless table using an attached rope held horizontally. If you now pull the rope with the same force at an angle to the horizontal (with the box remaining flat on the table), does the acceleration of the box.
(a) Remain the same,
(b) Increase, or
(c) Decrease? Explain.

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