Please help me with this physics problem! Please answer with work, thank you!

l 1. VV U. lVlUlllUlLluLu Momentum Conservation: Cart and Launched Ball A cart rolls across a level surface with almost no rolling friction. It carries a small steel ball and is outtted with a spring-loaded device that launches the steel ball into the air. The cart has a mass of 1 kg and the steel ball has a mass of .25 kg. A) When the cart is rolling with a speed of 12 m/s, it launches the ball at a velocity of 5 m/s straight up with respect to the cart. What is the cart's Speed, as measured by a stationary observer, just aer it launches the steel ball? And what is the ball's speed as measured by a stationary observer? B) On a second trial, when the cart is once again rolling with a speed of 12 m/s, it launches the ball with a velocity of 5 m/s straight up with res ect to a statiena observer. What is the cart's speed, as measured by a stationary observer, just after it launches the steel ball?- C) On a third trial, the cart starts from rest and launches the hall at a speed of 40 m/s and an angle of 30 above the horizontal, as measured by a stationary observer. What is the cart's _ speed, as measured by a stationary observer, just after it launches the steel ball? Once again, . friction is negligible