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=10ms2)
A
12.6×105kg
B
15.5×106kg
C
9.8×105kg
D
10.5×106kg
Answer
10.5×106kg
Explanation
Solution
Answer (d) 10.5×106kg