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belka [17]
3 years ago
7

A rubber 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 a

fter impact is 4.2 m/s and just after impact is 4.2 m/s. What is the change in the ball's momentum?
Physics
1 answer:
My name is Ann [436]3 years ago
3 0

Answer:

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 v_1=4.5m/sec

Velocity of ball after impact v_2=-4.2m/sec ( negative sign is due to opposite direction of motion )

Change in momentum is given by m(v_2-v_1)=0.3\times (-4.2-4.5)=0.3\times =0.3\times -8.7=-2.61kgm/sec ( negative sign shows the direction of change in momentum )

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