NCERT Exemplar XII — task. Science CBSE, Class 9.

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The velocity of a body moving in a straight line is increased by applying a constant force F, for some distance in the direction of the motion. Prove that the increase in the kinetic energy of the body is equal to the work done by the force on the body.

The formula to calculate the Work done(\(W\)) is,

\(W\ =\ \frac{F}{s}\)
\(W\ =\ F \times s\)
\(W\ =\ \frac{F}{g}\)
\(W\ =\ F \times g\)

Force is calculated by:

\(F\ =\ \frac{m}{a}\)
\(F\ =\ m \times a\)

Equation of motion,

i^{i} - i^{i} = i \times i \times i

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62. NCERT Exemplar XII

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