body of mass 5kg moves on the substrate under the action of a force of 40N. The force acts on the body of 60 ° in relation to the substrate. How much acceleration does the body get if we ignore the friction. What is the reaction force of the substrate​

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.