Homework Assignment 2 Solutions
Displacement vs. Time Graphs
The motions described in each of the questions take place at an intersection on a two-lane road with a stop sign in each direction. For eac
Homework Assignment 3 Solutions
Problem 2.33: Air-bag injuries.
During an auto accident, the vehicle's air bags deploy and slow down the passengers more gently than if they had hit the windshield or s
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Problem 1) a) F=ma and the force supplied by both engines is the same. Therefore car b will have a greater acceleration and hence greater velocity 1 m into the race. b) We know work is change in kinet
Problem 7.2 In the rough area, the block decelerates and travels a distance s. We can use the equation vf2= vi2+2ax. When x =s, vf=0. We can solve for acceleration: a=-vi2/2s. We want to find the dist
Problem 1) a) W=| F| | s| cos() and =90 so W=0 b) 0<90 and so cos()>0 so that W>0 c) Here =-180 so W<0 d) =0 so W>0 e) W< 0 f) =-90 so W=0 g) cos()>0 for 0> -90 h) a. | s|=160m , | F| =18N, =0 so W=29
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Physics 6A Practice Final Problems
1) A locomotive engine of mass M is attached to 5 train cars, each of mass M. The engine produces a constant force that moves the train forward at acceleration a. If
Physics 6A
Practice Final (Fall 2009) solutions
Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB
1. A locomotive engine of mass M is attached to 5 train cars, each of mass M.
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