Number 3 W: GPE, KEN- mgh - 2mu?Name:Period:Igal.HDate:Conservation of EnergyDirections: Read each of the following statements/questions. Answer them correctly and box your final answer.A large chuck of ice with mass 15.0-kg falls from a roof 8.00 m above the ground.Find the kinetic energy of the ice when it reaches the ground.a.KE - (15)( 9.8)(8)=1176 JGPE= KEh: -8b. What is the speed of the ice when it reaches the ground?2KE =nv?2v? 2 KE(12.57 )1 (176J).52m/s15K92.A bike rider approaches a hill with a speed of 8.50 m/s. The total mass of the bike and rider is 85-kgFind the kinetic energy of the bike and rider.a.7850)(8.5)07o,6 Jb. The rider coast up the hill. Assuming there is no friction; at what height will the bike come to astop? KE h307o76mg354 J(85)(9.8)c. Does your answer depend on the mass of the bike and rider? Explain.Tarzan, mass 85-kg, swings down from a tree limb on the end of a 20 m vine. His feet touch the ground4.0 m below the limb.How fast is Tarzan moving when he reaches the ground?a.b. Does your answer depend on Tarzan's mass?c.Does your answer depend on the length of the vine?4. A skier starts from rest at the top of a 45.0 m hill; skies down a 30.0° incline into a valley, and continuesup a 40 m hill. Both hill heights are measured from the valley floor. Assume you can neglect friction andthe effects of ski poles.a. How fast is the skier moving at the bottom of the valley?b. What is the skier's speed at the top of the next hill?

Name: Number 3 W: GPE, KEN- mgh - 2mu?Name:Period:Igal.HDate:Conservation of
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Description: Number 3 W: GPE, KEN- mgh - 2mu?Name:Period:Igal.HDate:Conservation of EnergyDirections: Read each of the following statements/questions. Answer them correctly and box your final answer.A large chuck of ice with mass 15.0-kg falls from a roof 8.00 m

3. Given: mass m =85 kgheight from grounf h=4mlength of vine L=20m

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3. Tarzan, mass 85-kg, swings down from a tree limb on the end of a 20 m vine. His feet touch the grol 4.0 m below the limb. a. How fast is Tarzan moving when he reaches the ground? b. Does your answer depend on Tarzan's mass? c. Does your answer depend on the length of the vine?