A mass in motion experiences an acceleration, -a for time, t. Assuming left as the negative direction, which of the following vectors could NEVER represent the velocity after time t?
I. (arrow pointing towards the right)
II. (arrow pointing towards the left)
III. Zero magnitude
(A) I only
(B) II only
(C) III only
(D) All are possible .
Answer: (D) All are possible .
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