A 190-kg rugby player running east with a speed of 4.00 m/s tackles a 95.0-kg opponent running north with a speed of 3.90 m/s. Assume the tackle is a perfectly inelastic collision. (Assume that the +x axis points towards the east and the +y axis points towards the north.) (a) What is the velocity of the players immediately after the tackle? magnitude X Your response differs from the correct answer by more than 10%. Double check your calculations. m/s direction . counterclockwise from the +x axis (b) What is the amount of mechanical energy lost during the collision? Need Help? Read It 9. [0/5 Points] DETAILS PREVIOUS ANSWERS KATZPSEF1 11.P.075.MI. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Rutherford fired a beam of alpha particles (helium nuclei) at a thin sheet of gold. An alpha particle was observed to be deflected by 90.0; its speed was unchanged. The alpha particles used in the experiment had an initial speed of 1.6 x 10' m/s and a mass of 6.7 x 10-27 kg. Assume the alpha particle collided with a gold nucleus that was initially at rest. Find the speed of the nucleus after the collision. X Your response differs from the correct answer by more than 10%. Double check your calculations. m/s Need Help? Read It Master It