A 2 kg particle moves along x-axis such that its position $(x)$ varies with time $(t)$ as $x = 2{t^2} + 3.$ During the initial 5 seconds, the work done by all the forces acting on the particle is

JEE PHYSICS MCQ: WORK-ENERGY-POWER

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A 2 kg particle moves along x-axis such that its position

(x)

varies with time

(t)

x = 2{t^2} + 3.

During the initial 5 seconds, the work done by all the forces acting on the particle is

View answer and explanation

Correct option: A

400 J

Option A (400 J) is correct because the work done is equal to the change in kinetic energy, calculated using the velocities at the initial and final times.

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