A plane is revolving around the earth with a speed of 100 km/hr at a c – McqOptions

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1.	A plane is revolving around the earth with a speed of 100 km/hr at a constant height from the surface of earth. The change in the velocity as it travels half circle is [RPET 1998; KCET 2000]
A.	200 km/hr
B.	150 km/hr
C.	\[100\,\sqrt{2}\,km/hr\]
D.	0
Answer» B. 150 km/hr

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