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# (Solved): Cant figure out 14-17!!! 8. A 60.0kg pole vaulter is able to clear a jump of 6.10m. How fast ...

Can’t figure out 14-17!!!

8. A pole vaulter is able to clear a jump of . How fast was he running the instant before beginning the jump? 9. How much work does a motor do in min? 10. An archer puts a arrow to a bowstring and pulls the string back with an average force of With what speed does the arrow leave the bow? The roller coaster's car starts from rest. 11. What is the speed of the car after it just loses contact with the spring at the top of the first hill? 12. What is the speed of the car when it is 18 meters above the ground? 13. What is the speed of the car as it enters the loop? 14. What is the speed of the car when it reaches the top of the loop? 15. What is the speed of the car as the instant before it makes contact with the spring on the right? 16. What is the spring's spring constant? 17. What is the speed of the car after the spring has been compressed from equilibrium?

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