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I am a plus 2 student.....

in 9th standard the escape velocity of a rocket to go to outside the earth is 11.13km/sec

not sure .13 or not

Q: How mach speed of the rocket?

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0,72 Mach is a subsonic speed. Mach number = speed of an object/speed of sound The speed of sound in dry air at 20 0C is 1 236 km/h.

That means the speed, compared to the speed of sound. For example, "mach 2" means twice the speed of sound.

Mach 1 is the speed of sound. 768 miles per hr. Mach 2 is twice that & so on.

Mach 0.8 = about 593.2 mph

The speed of sound is around 760 miles per hour = Mach 1. So Mach 4 is 4*760 = 3040 mph.

Related questions

A Dassault Mirage III can go Mach 1.52 (1127.0115 mph) without a rocket, Mach 1.8 (1334.6188 mph) with a rocket at max speed.

Maximum speed: Mach 0.96Operating speed: Mach 0.89

The mach number is the speed, compared to the speed of sound in air. Thus, mach 1 is the speed of sound, mach 2 is twice (2 times) the speed of sound, mach 3 is 3 times the speed of sound, etc.

340.29 m/s

the Mach number

The "Mach number" is the speed of the aircraft as a percentage of the speed of sound. So an aircraft going at Mach 0.74 is traveling at 74% of the speed of sound. (Mach 0.74 is a typical airliner speed.)

Mach 2.

No, Mach is a unit of speed used to measure an object's speed relative to the speed of sound in the medium through which it is traveling. For example, Mach 1 is the speed of sound.

Mach refers to the speed of sound, for example, mach 1, equals the speed of sound, mach 2, the speed of sound times 2. So, mach 25 would mean, 25 times the speed of sound.

Speeds faster than Mach 1 are measured in multiples of Mach, such as Mach 2 (twice the speed of sound), Mach 3 (three times), and so on. Each Mach number represents the speed of an object in relation to the speed of sound.

0,72 Mach is a subsonic speed. Mach number = speed of an object/speed of sound The speed of sound in dry air at 20 0C is 1 236 km/h.

Mach is the coefficient of the speed of sound, so Mach 1 means you are travelling at 1 x the speed of sound.