question_answer

A stone is allowed to fall from the top of a tower 100 m high and at the same time another stone is projected vertically upwards from the ground with the velocity of\[25\text{ }m/s\]. Calculate when and where the two stones meet. \[\left( Take\text{ }g=10\text{ }m/{{s}^{2}} \right)\]

A) After 12 seconds from start and at the height of 50 m.

B) After 5 seconds from start and at the height of 10 m.

C) After 8 seconds from start and at the height of 10 m.

D) After 4 seconds from start and at the height of 20 m.

E) None of these