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If a body of mass 1 kg falls on the earth from infinity, it attains velocity (v) and kinetic energy ( k) on reaching the…

Q1

If a body of mass 1 kg falls on the earth from infinity, it attains velocity (v) and kinetic energy ( k) on reaching the surface of earth. The values of v and k respectively are __________
(Take radius of earth to be 6400 km and \(g=9.8m/{s}^{2}\) )

[02 April, 2026 (Shift-2)]

a

\(11.2km/s;6.27\times {10}^{7}J\)

b

\(11.2km/s;12.54\times {10}^{7}\)

c

\(8.8km/s;6.27\times {10}^{7}J\)

d

\(8.8km/s;12.54\times {10}^{7}J\)

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