4/28/10

Post date: Apr 28, 2010 5:30:3 PM

Bell Ringer: A roller coaster car is released from rest at a height of 32.5 m. It goes down a hill then through a loop. How fast is it going when (on the loop) it reaches a height of 19 m?

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      1. 0.04 J

      2. 50,000 Watts

      3. a) 60,000 J, b) 60%

      4. 1200 N

      5. 10 (rounded from 12.5)

      6. 9.0 m/s

      7. a) 3300 J, b) 3300 J, c) 8200 J

      8. a) 470,000 J, b) 31 m