# practice II - Practice II, Fall 2006 1. A roller-coaster...

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Unformatted text preview: Practice II, Fall 2006 1. A roller-coaster car has a mass of 500 kg when fully loaded with passengers. The car passes over a hill of radius 15 m, as shown in Figure A. At the top of the hill, the car has a speed of 8.0 m/s. What is the force of the track on the car at the top of the hill? Figure A A) 4.9 10 3 N up B) zero C) 4.9 10 3 N down D) 2.8 10 3 N up E) 2.8 10 3 N down F) 2.1 10 3 N up G) 2.1 10 3 N down H) 7.0 10 3 N up I) 7.0 10 3 N down J) 5.6 10 3 N up 2. A small spherical bead of mass 3.00 10-3 kg is released from rest at t = 0 in a bottle of liquid shampoo. The terminal speed is observed to be v t = 1.96 10-2 m/s. Until it reaches terminal speed, the magnitude of its acceleration is given by a = g (b/m)v . Find the value of the constant b (N s/m). A) 1.96 B) zero C) 9.80 D) 3.00 E) 1.50 F) 2.94 G) 6.00 H) 4.90 I) 1.00 J) 2.00 3. Problem continued: Find the time t (s) the bead takes to reach 0.632 v t . A) 1.00 10-3 B) zero C) 3.00 10-3 D) 5.00 10-3 E) 7.00 10-3 F) 2.00 10-3 G) 4.00 10-3 H) 6.00 10-3 I) 8.00 10-3 J) 1.50 10-3 4. A force F = (2 i 3 j ) N acts on a particle that undergoes a displacement...
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## This note was uploaded on 09/15/2008 for the course PHY 2048 taught by Professor Criss during the Fall '08 term at University of South Florida - Tampa.

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practice II - Practice II, Fall 2006 1. A roller-coaster...

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