Exercise VIII — task. Science CBSE, Class 9.

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Certain force acting on a 20 \(kg\) mass changes its velocity from 5

m s^{- 1}

to 2

m s^{- 1}

. Calculate the work done by the force.

The kinetic energy possessed by an object of mass (\(m\)) and moving with a velocity (\(u\)) is,

E_{i} = \frac{i}{i} \times i \times i^{i}

Initial kinetic energy of the object \(=\) \(J\)

The kinetic energy possessed by an object of mass (\(m\)) and moving with a velocity (\(v\)) is,

E_{f} = \frac{i}{i} \times i \times i^{i}

Final kinetic energy of the object \(=\) \(J\)

Work done \(=\) \(J\)

Did you find an error?

8. Exercise VIII