question_answer

A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is   (NCERT Exemplar)

A) u/g                                           

B) \[{{u}^{2}}\]/2g

C) \[{{u}^{2}}\]/g                       

D) u/2g

Correct Answer: B

Solution :

[b] Given, initial velocity = u, height = A and a = g (acceleration due to gravity) At the highest point, final velocity becomes zero i.e., v =0 From, third equation of motion,