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Initial momentum = (0.8) × (5)

\n\n

= 4.0kgms\\(^{-1}\\)

\n\n

Final momentum

\n\n

= (0.8) × (– 5)

\n\n

= – 4.0kgms\\(^{-1}\\)

\n\n

Impulse on ball

\n\n

= Change in momentum

\n\n

= 4.0 – (– 4.0)

\n\n

= 8.0.0kgms\\(^{-1}\\)

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JAMB - Physics (2018 - No. 43)

Explanation

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