If you hear a firecracker 5 seconds after it is fired, how far away from it are you? ( Assume the speed of sound in air to be 0.33km/s) *
1350 m
1400 m
1650 m
1550 m
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1
Answer:
1650
Explanation:
We know speed = distance/time,
then distance=speed×time
=0.33×5=1.65
=1650
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