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A stone is dropped from the top of build...

A stone is dropped from the top of building and at the same time a second stone is thrown vertically upward from the bottom of the building with a speed of 20 m`s^(-1)`. They pass each other 3 seconds later. Find the height of the building

A

40m

B

60m

C

65m

D

80m

Text Solution

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The correct Answer is:
B
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MOTION-KINEMATICS-EXERCISE 2 OBJECTIVE PROBLEMS
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