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How can you estimate the height of a bridge by dropping a
stone from it ?
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Answer / sanju
The velocity of sound in air is 1120 ft per second. So we
can calculate the height of the bridge by nothing the time
of throwing the stone and its sound heard, when it strikes
the surface of the water.
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / rakesh kumar
We can use formula h= 1/2*g*t*t we can note down the time
by simple noting down time, we drop and when it falls. plug
the value of g and t in the equation we will get 'h'
| Is This Answer Correct ? | 2 Yes | 0 No |
Answer / 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.
| Is This Answer Correct ? | 1 Yes | 0 No |
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