A lift is coming from 8th floor and is just about to
reach 4th floor. Taking ground floor as origin
and positive direction upwards for all quantities,
which one of the following is correct?
(a) X < 0, v < 0, a > 0 (b) X > 0, v < 0, a < 0
(c) X > 0, v < 0, a > 0 (d) X > 0, v > 0, a < 0
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Answer:
b
Explanation:
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