An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per – InterviewSolution

1.

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»

Initial velocity, u = 600 km/h

Final velocity, v = 1100 km/h

Acceleration = 10 km/h/s = 600 km/h²

From formula,

a = (v-u)/t

t = (v-u)/a

t = 50 sec

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