Question

An aircraft traveling at 600km/h accelerates steadily at 10km/h per second. Taking the speed of sounds as 1100km/h at the aircraft's altitude, how long will it take to reach the sound barrier.​

Answer 1

V2 - V1 = a t for uniformly accelerated motion

t = (V2 - V1) / a = (1100 -600) km/hr / 10 km/hr/sec

t = 500 / 10 sec = 50 sec