Read the following statements and choose the correct answer.
a)For a freely falling body the average velocity is proportial to square root of height of fall.
b)For a freely falling body the displacements in successive equal time intervals are in the ratio `1:4:9`......
c)For a vertically projected body the displacement during last second time of flight changes with velocity of projection.
d)For a body projected from the top of the tower the displacement of the body is negative when the body crosses the poiny of projection.

Options

A. a,c,d are true
B. both a,b are true
C. b & c are true
D. c and d are true

Answer

A