Pls help ASAP 23. A 4.20 kg block sliding at 9.40 m/s across a horizontal frictionless surface collides head on with a stationary 8.60 kgblock. The 4.20 kg block rebounds at 1.80 m/s. How much kinetic energy is lost during this collision? 22. A 0.60 kg ball starting from position A which is 7.5 m above the ground, is projected down an incline as shown.Friction produces 10.7 J of heat energy. The ball leaves the incline at position B travelling straight upward andreaches a height of 13.0 m above the floor before falling down. What was the initial speed, vo, at position A? Ignoreair resistance.13.0 m7.5 m

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Answered: 23. A 4.20 kg block sliding at 9.40 m/s…

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 10PE: (a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter...

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