Question

A stone is projected vertically upwards with speed 10 metre per second from the top of a 200 metre high building and at the same time another stone is projected vertically upwards from the ground with speed 50 metre per second in the same line then the time after which the collide is?​

Answer 1

Answer:

APPROX 3.3333.... SECONDS

Explanation:

BECAUSE THE SECOND STONE SPEED IS 50 M/S SO THE FIRST AND THE SECOND STONE WILL COVER 30 M AND 150 M AFTER 3 SECONDS.

THEN AFTER 0.333333... SECONDS THEY WILL COLLIIDE .

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IT CAN BE WRITTEN BY THIS FORMULA ALSO

200 m / (10 m + 50 m )

200 m / 60 m

3.333333333........

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