A piece of wood of mass 0.03 kg is dropped from the top of a 
m height building. At the same time, a bullet of mass 0.02 kg is fired vertically upward, with a velocity 
, from the ground. The bullet gets embedded in the wood. Then the maximum height of which the combined system reaches above the top of the building before falling below is: 
Text Solution
Verified by ExpertsC
JEE Main 2019
Time taken for the particles to collide,
Speed of wood just before collision 
& speed of bullet just before collision 
Now, using conservation of linear momentum just before and after the collision
Max. height reached by body
Height above tower 
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