The diagrams below show different objects of equal masses that are acted on by one or more forces. In the diagrams below, each force vector labeled F
has the same magnitude.
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(a)
Which of the four objects shown has a net zero force acting on it?
(i)
(ii)
(iii)
(iv)
(b)
Which object or objects have the largest magnitude of force? (Select all that apply.)
(i)
(ii)
(iii)
(iv)

(c)
Which object or objects move with constant velocity? (Select all that apply.)
(i)
(ii)
(iii)
(iv)

(d)
Which object or objects move with changing speed? (Select all that apply.)
(i)
(ii)
(iii)
(iv)