use P.E of stone at bridge = K.E of stone at striking the ground mgh=1/2 m

How can you estimate the height of a bridge by dropping a
stone from it ?

Question Posted / sujay

Answer Posted / sujay

use P.E of stone at bridge = K.E of stone at striking the ground
mgh=1/2 m v sq. max
V max by projectile eqn.

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