Yasmin is testing an unknown solution to determine whether it is an acid or a base. she dips red litmus paper in the solution. it remains red. what can she conclude about the sample?

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.