Question

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An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per second. Taking the speed of sound as 1100 km/h at the aircraft’s altitude how long will it take to reach the ‘sound barrier’?​

Answer 1

Answer:

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Initial velocity, u = 600km/h

Final velocity, v = 1100km/h

Acceleration = 10km/h/s=600km/h ^2

From relation,

a= (v−u)/t

t = (v−u)/a

t=(1100−600)/600

=500/600=5/6 hr=50 sec

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