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# ch5 hw 1 - Ch5 HW1 f10 Page 1 of 4 WebAssign Ch5 HW1...

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Web Assign Ch5 HW1 f10 (Homework) Ashlyn Baum Physics 303K, section B, Fall 2010 Instructor: Jim Chelikowsky Current Score : 22.5 / 22.5 Due : Sunday, October 3, 2010 11:30 PM CDT 1. 3/3 points Question: MI3 5.1.X.012 The velocity of a 90 gram ball changes from < 7 , -5 , 0 > m/s to < 7.4 , -5.4 , 0 > m/s in 0.07 s, due to the gravitational attraction of the Earth and to air resistance. (a) What is the acceleration of the ball? = < 5.7142 , -5.7142 , 0 > m/s/s (b) What is the rate of change of momentum of the ball? = < 0.5142 , -0.5142 , 0 > kg · m/s/s (c) What is the net force acting on the ball? = < 0.5142 , -0.5142 , 0 > N 2. 1.5/1.5 points Question: MI3 5.2.X.003 3. 4/4 points Question: MI3 5.2.X.013 A rope is attached to a block. The rope pulls on the block with a force of 260 N, at an angle of 30 degrees to the horizontal (this force is equal to the tension in the rope). The due date for this assignment is past. Your work can be viewed below, but no changes can be made. View Key

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ch5 hw 1 - Ch5 HW1 f10 Page 1 of 4 WebAssign Ch5 HW1...

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