A stone was dropped on top of the 500-foot building. How long in seconds will the hit be heard if the sound speed is 1,080 feet per second? Neglecting air resistance.
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Answered by
1
We know.,Time=2*distance/speed
Time=2*500/1080
=1000/1080
=0.925 seconds
Time=2*500/1080
=1000/1080
=0.925 seconds
Answered by
0
Convert the data first
1 foot = 0.305m
given height,s=152.5m
g=10
speed of sound =329.4
on analysing we get that we have to find time period
first analyze the data and apply different formulas for it then see which formula suits the best.
the formula that should be used here is
s=ut+1/2at2
u=0,
152.5=0+1/2x10xtxt
we get t=5.522sec
now the time for the resound=152.5/329
=0.4629 sec
total time=5.52+0.4629=5.6889 sec
Hope u understood
any confusion please fell free to contact me
1 foot = 0.305m
given height,s=152.5m
g=10
speed of sound =329.4
on analysing we get that we have to find time period
first analyze the data and apply different formulas for it then see which formula suits the best.
the formula that should be used here is
s=ut+1/2at2
u=0,
152.5=0+1/2x10xtxt
we get t=5.522sec
now the time for the resound=152.5/329
=0.4629 sec
total time=5.52+0.4629=5.6889 sec
Hope u understood
any confusion please fell free to contact me
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