Q. 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
A) $(a + a_{0})$ upward
B) $(a - a_{0})$ upward
C) $(a + a_{0})$ downward
D) $(a - a_{0})$ downward
Explanation
(d) The effective acceleration of ball observed by observer on earth $= (a - a_{0})$
As $a_{0} < a$, hence net acceleration is in downward direction
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.