Two cars collide at an icy intersection and stick together afterward. The first car has a mass of 1300 kg and was approaching at 7.00 m/s due south. The second car has a mass of 750 kg and was approaching at 25.0 m/s due west. (a) Calculate the final velocity of the cars. (Note that since both cars have an initial velocity, you cannot use the equations for conservation of momentum along the x-axis and y-axis; instead, you must look for other simplifying aspects.) Magnitude _________________ m/s Direction _________________ ° (counterclockwise from west is positive) (b) How much kinetic energy is lost in the collision? (This energy goes into deformation of the cars.) __________________ J
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00 \, \text{m/s} = 9100 \, \text{kg m/s}\] \[p_2 = m_2 \cdot v_2 = 750 \, \text{kg} \times 25.0 \, \text{m/s} = 18750 \, \text{kg m/s}\] \[p_{\text{final}} = \sqrt{9100^2 + 18750^2} = \sqrt{82810000} = 9100 \, \text{kg m/s}\] Show more…
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