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

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Solution

When velocity of aircraft becomes 1100 kmph
$V = u + a t$
$\Rightarrow 1100 = 600 + 10 t$
$\Rightarrow 500 = 10 t$
$∴ t = 50 s$

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

When velocity of aircraft becomes 1100 kmph V=u+at ⇒1100=600+10t ⇒500=10t ∴t=50s

When velocity of aircraft becomes 1100 kmph
$V = u + a t$
$\Rightarrow 1100 = 600 + 10 t$
$\Rightarrow 500 = 10 t$
$∴ t = 50 s$