I need some practice with these problems in Physics. I'm taking some extra work so I can study so I'm using a few practice problems. Please show the work so I can study it!! Please include all the work states. The photos are where the questions are Refer to the photos below to answer, thanks!!

3- A 2600 kg SUV traveling west at 15 m/s collides head on with a 1300 kg sedan traveling east at 20 mis. Determine the speed and direction of the two cars immediately after impact if they look together. A 136 kg defensive lineman is about to tackle a 100 kg quarterback. Right before impact, the lineman is moving north at 6.0 m/s and the the quarterback is moving north at 1.0 mils. Determine the speed and direction of the two players immediately after the tackle