Laws Of Motion Question 235
Question: A lift accelerated downward with acceleration ‘a’. A man in the lift throws a ball upward with acceleration $ a _{0}(a _{0}<a). $ Then acceleration of ball observed by observer, which is on earth, is[AIEEE 2002]
Options:
A) $ (a+a _{0}) $ upward
B) $ (a-a _{0}) $ upward
C) $ (a+a _{0}) $ downward
D) $ (a-a _{0}) $ downward
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Answer:
Correct Answer: D
Solution:
The effective acceleration of ball observed by observer on earth = (a ? a0) As $ a _{0}<a, $ hence net acceleration is in downward direction.
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