question_answer

An earth satellite of mass M circles the earth with speed u. By how much does its momentum change as it goes halfway around the earth? (Ignore the earth's rotation)

A)  Mu                             

B)  2 Mu

C)  \[\sqrt{2}\,Mu\]                      

D)  \[2\sqrt{2}\,Mu\]

Correct Answer: B

Solution :

\[{{P}_{f}}-{{P}_{i}}=2Mu\]