A 2000 kg rocket in free space expels 0.5 kg of gas per second at exhaust velocity 400 ms –1 for 5 seconds. What is the increase in speed of rocket in this time -
Text Solution
Verified by ExpertsThe correct answer is:
C
× u = M 
0.5 × 400 = 2000 × 
v = 0.5 ms –1
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