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Finding Average Velocity

A rocket is t...

Question

A rocket is travelling in space. To increase the speed, it ejects the fuel at the rate of 200 kg/s and 250 m/s. Find the approximate change in its speed after 1 s when its mass is 20,200 kg.

A

5 m/s

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B

2 m/s

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C

2.5 m/s

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D

Cannot be calculated

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Solution

The correct option is C 2.5 m/s
.

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