The figure shows an unlabeled force diagram for a moving object that is missing one force. The length of the sides of the square grid corresponds to a force magnitude of 1 N.  1) Which additional force has to be exerted on the object so that the object accelerates downwards. Choose all answers that are correct. 2) Which additional force has to be exerted on the object so that the object moves at a constant speed. Choose all answers that are correct.

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