Arubber ball with a mass of 0.30 kg is dropped onto a steel plate. the ball's velocity just before impact is 4.5 m/s and just after impact is 4.2 m/s and just after impact is 4.2 m/s. what is the change in the ball's momentum?

Change in momentum will be -2.61 kgm/sec

Explanation:

We have given mass of the rubber ball m = 0.30 kg

Velocity of the ball before the impact

Velocity of ball after impact ( negative sign is due to opposite direction of motion )

Change in momentum is given by ( negative sign shows the direction of change in momentum )

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