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Question

The height of the tower is 200m a ball thrown up with a velocity of 50m/s , another ball dropped from a top of a tower, when and where they meet?

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Solution

The distance travelled by the body dropped from the height is given as

s=ut+12gt2

s=50t5t2

Both the body will together travel the distance of 200m

Hence

200=(50t5t2)+5t2

Time taken is4sec

Distance travelled by the falling stone is

s=12gt2

s=5×8=80m

The distance travelled by the projected body is

s=50×45×42

s=120m

So both body will meet at 120m above the ground.


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