BITSAT 2018 Slot 2 Solved Paper

Section: Physics

Question : 28 of 150

Marks: +1, -0

An asteroid of mass m is approaching earth, initially at a distance 10Re with speed vi. It hits earth with a speed vf (Re. and Me are radius and mass of earth), then

vf2=vi2+
2Gm
Re
(1+
1
10
)
vf2=vi2+
2GMe
Re
(1+
1
10
)
vf2=vi2+
2GMe
Re
(1−
1
10
)
vf2=vi2+
2Gm
Re
(1−
1
10
)

Validate

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