A body of mass 0.8 kg has intial velocity `(3hati-4hatj) ms^(-1)` and final velocity `(-6hatj+2hatk) ms^(-1)`. Find change in kinetic energy of the body?

Explanation

To find the change in kinetic energy of a body, we can use the formula:

\[ \Delta KE = \frac{1}{2} m (v_f^2 - v_i^2) \]

where:
- \( m \) is the mass of the body,
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