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?
Answer questions from homeworks
First 5 resources for projects due
Review for work and energy test (tomorrow) (answers below)
0.04 J
50,000 Watts
a) 60,000 J, b) 60%
1200 N
10 (rounded from 12.5)
9.0 m/s
a) 3300 J, b) 3300 J, c) 8200 J
a) 470,000 J, b) 31 m