A particle (A) is dropped from a height and another particles (B) is thrown into horizontal direction with speed of 5m/s sec from the same height. The correct statement is

Options

A. Particle (A) will reach at ground first with respect to particle (B)
B. Particle (B) will reach at ground first with respect to particle (A)
C. Both particles will reach at ground simultaneously
D. Both particles will reach at ground with same speed

Answer

C

Explanation

For particle (A)
`h=1/2"gt"^2`
`t_A=sqrt((2h)/g)`
For particle (B) In vertical direction
use `s=ut +1/2at^2`
`rArr h=1/2 g t_B^2rArr t_B=sqrt((2h)/g)`