solve fully, use diagrams if needed 2. A cube of aluminum 1.00m x 1.00m x 1.00m is moving at 0.9c in an orientation as shown. The rest density of aluminum is 2.70 x 10^3 kg/m^3. (density = mass/volume) a. Which of its three dimensions a, b, or c, is affected by its motion? Why? b. Calculate its relativistic volume (hint: you will need to calculate the relativistic value of the dimension from (a) first.) c. What assumption is made about the trajectory of the cube (at right)? Hint: think dimensions