SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The most appropriate unit for expressing the speed of a space rocket is:
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km/s
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m/s
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km/h
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km/min
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Explanation:
Detailed explanation-1: -A rocket travels at a speed of 15000 m/s and we need to find the speed of the rocket in km/hr. Let’s see the convention of km/h to m/s: 1 km = 1000 meters. Therefore, rockets traveling at a speed of 15000 m/sec can be easily expressed in km/hr as shown above.
Detailed explanation-2: -Out into space Once at a steady cruising speed of about 16, 150mph (26, 000kph) in orbit, astronauts no more feel their speed than do passengers on a commercial airplane.
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