Laws Of Motion Question 235

Question: A lift accelerated downward with acceleration ‘a’. A man in the lift throws a ball upward with acceleration a0(a0<a). Then acceleration of ball observed by observer, which is on earth, is[AIEEE 2002]

Options:

A) (a+a0) upward

B) (aa0) upward

C) (a+a0) downward

D) (aa0) downward

Show Answer

Answer:

Correct Answer: D

Solution:

The effective acceleration of ball observed by observer on earth = (a ? a0) As a0<a, hence net acceleration is in downward direction.



NCERT Chapter Video Solution

Dual Pane