A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

A particle is dropped from the top of a tower 60 m high and another is

1.	A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is
A.	16 m/sec
B.	18 m/sec
C.	20 m/sec
D.	22 m/sec.
Answer» D. 22 m/sec.