JEE Main 2026 — Physics Mechanics
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=9.8 m/s2)
Held on 2 Apr 2026 · Verified 6 Jul 2026.
11.2 km/s; 6.27×107 J
11.2 km/s; 12.54×107 J
8.8 km/s; 6.27×107 J
8.8 km/s; 12.54×107 J
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