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Question

Physics Question on momentum

A rocket is about to launch upwards from its platform. The engine ejects gas at a rate of 2100 kg/s and the molecules are expelled at 50 m/s. If the above condition is just sufficient to make it rise upwards, the mass of the rocket is (Assume g=10ms2g = 10\, ms^2)

A

12.6×105kg12.6 \times 10^5 \, kg

B

15.5×106kg15.5 \times 10^6 \, kg

C

9.8×105kg9.8 \times 10^5 \, kg

D

10.5×106kg10.5 \times 10^6 \, kg

Answer

10.5×106kg10.5 \times 10^6 \, kg

Explanation

Solution

Answer (d) 10.5×106kg10.5 \times 10^6 \, kg