Question: (a) You are told that an object has zero acceleration. Which of the following is true: (1) The object is at rest; (2) the object

(a) You are told that an object has zero acceleration. Which of the following is true: (1) The object is at rest; (2) the object is moving with constant velocity; (3) either (1) or (2) is possible; or (4) neither 1 nor 2 is possible.
(b) Two forces on the object are F1 = 3.6 N at 74o below the +x-axis and F2 = 3.6 N at 34o above the – x-axis. Is there a third force on the object? Why or why not? If there is a third force, what is it?

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