Question

A body of mass 2 kg is thrown up vertically with kinetic energy of 490 J. The height at which the kinetic energy of the body becomes half of its original value is

(a) 50 m

(b) 12.25 m

(c) 25 m

(d) 10 m

Answer 1

Correct option (b) 12.25 m

Explanation :

Potential energy at the required height