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 a velocity of 25 m/s. Calculate when and where the two stones meet. (take g = )

A) The two stones meet after 4 seconds from the start and at a height of 16 m above the ground

B) The two stones meet after 4 seconds from the start and at a height of 20 m above the ground

C) The two stones meet after 6 seconds from the start and at a height of 20 m above the ground

D) The two stones meet after 5 seconds from the start and at a height of 25 m above the ground

E) None of these