Question

A particle is dropped under gravity while another
particle is thrown downwards with an initial velocity
of 2 m/s simultaneously from the same point.
These particles are at a separation of 18 m after
time
(1) 4.5 s
(2) 9s
(3) 9.8 s
74) 18 s​

Answer 1

Explanation:

I think it will be nine seconds