7.A rubber ball of mass 250 g hits a wall normally with a velocity of 10 metre per second and bounces back with a velocity of 8 metre per second . Calculate the impulse

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Q. A rubber of mass

200

g hits a wall normally with a velocity of

{10 m s}^{- 1}

and bounces back with a velocity of

{8 m s}^{- 1}

. The impulse is _____ Ns.

Q. A rubber ball of mass 250 g hits a wall normally with a velocity

10 m s^{- 1}

and bounces back with a velocity of

8 m s^{- 1}

. The impluse is _______N s.

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