Two ice skaters, of mass 30 kg and 80 kg, are skating across the surface of a frozen lake on a
collision course, with respective velocities of 2.0 m/s in a general north direction, and 1.0 m/s
generally west, as shown above. After they collide, the pair of skaters move off in a direction
north of west with a momentum of approximately 100 kg m/s. How much kinetic energy was
lost in the collision?
OJ
110)
55
70)
120

5submission this assignment is worth 20 points total. you are required to submit the following by next lab: 1. (3 points) determine the equation for the output angular velocity ω2 = θ˙ 2 as a function of θ1, ω1 = θ˙ 1 and α. you must show all your work to receive credit. 2. (2 points) use the result of problem#1 to plot ω2 over 0 ≤ θ1 ≤ 360deg with ω1 = 360deg/sec. do this for α = {10,30}deg. show the results on the same plot and properly label the axes, title, legend. for this you can use matlab or ms excel. 3. (3 points) determine the equation for the output angular acceleration ω˙ 2 and create a plot similar to the one in problem#2. 4. (10 points) submit plots of the results (ω2 and ω˙ 2) obtained from creo/mechanism and compare them to results of problem#2 and problem#3. note that you should do these comparisons for the two cases with α = {10,30}deg. 5. (2 points) provide a brief explanation of the results. did they match? what are the implications as misalignment angle increases?

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false

Three resistance 4,4 and 6 ohms are joined in the series. the total resistance will be