Q

The work done to increase the kinetic energy of a 4 kg object from 50 J to 98 J is:

RRB Group D 13 Aug, 2026 (9:00 AM - 10:30 AM) 2026
✓ Answer: A 48 J
The correct choice is 48 J. It follows from the relevant Newtonian mechanics, motion, work, energy, power or simple-machine relationship.
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