On a touchdown attempt a 95.0 kg runningback runs towards the endzone at 4.35 m/s. A 102.0 kg linebacker moving at 6.42 m/s meets the runningback in a head-on collision. If the runningback is moving in the positive direction, and the two players stick together, what is their velocity immediately after the collision?

50.)the diagram below represents the wave fronts produced by a point source moving to the right in a uniformmedium. observers are located at points a and b.compared to the wave frequency and wavelength observed at point a, the wave observed at point b has a(1) higher frequency and a shorter wavelength(2) higher frequency and a longer wavelength(3) lower frequency and a shorter wavelength(4) lower frequency and a longer wavelength