1. The problem statement, all variables and given/known data A 110 kg fullback is running at 4.4 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west. A. Calculate the impulse exerted on the fullback. B. Calculate the impulse exerted on the tackler. C. Calculate the average force exerted on the tackler. 2. Relevant equations Fnet*delta time = change in momentum 3. The attempt at a solution To solve A I set up the equation like this .75X= 110 * 0 + 110 * 4.14 .75x=484 divide by .75 and you get 645.33 Ns This is not right but I'm not sure why. Did I calculate the change in momentum incorrectly? I'm not sure how to find the impulse on the tackler because I don't have his mass given to me and I don't have his velocity .