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A particle is projected from the surface of earth of mass M and radius R with speed `v`. Suppose it travels a distance `x(lt lt R)` when its speed becomes `v` to `v//2` and `y(lt lt R)` when speed changes from `v//2` to 0. Similarly, the corresponding times are suppose `t_(1) and t_(2)`. Then
`{:(,"Column-I",,"Column-II"),("(A)",x//y,"(p)",=1),("(B)",t_(1)//t_(2),"(r)",gt 1),(,,"(r)",lt 1):}`

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