A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹

A block of mass 10 kg is moving in X-direction with a constant speed of 10 ms⁻¹.It is subjected to a retarding force F=-0.1 x m⁻¹, during its travel from x=20m to x=30m.Its final kinetic energy will be

Options

(a) 475 j
(b) 450 j
(c) 275 j
(d) 250 j

Correct Answer:

475 j

Explanation:

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