A ball is in free fall motion.Upward is taken to be the positive direction.The displacement of the ball is:
A)positive during both ascent and descent
B)negative during both ascent and descent
C)negative during ascent and positive during descent
D)positive during ascent and negative during descent
E)none of the above

Question

Quizplus · Accepted Answer

During ascent, the ball is moving in the negative direction (downward) while its displacement is in the positive direction (upward), so its displacement is positive. During descent, the ball is moving in the positive direction (upward) while its displacement is in the negative direction (downward), so its displacement is negative. Therefore, the displacement of the ball is positive during ascent and negative during descent.

A Ball Is in Free Fall Motion