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'?
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Answer:
50sec
Explanation:
Initial velocity, u = 600km/h
Final velocity, v = 1100km/h
Acceleration = 10km/h/s=600km/h
From relation,
a= t (v−u)
t= a (v−u)
t= 600 (1100−600)
=500/600=5/6 hr=50 sec
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