Feeling slightly uncomfortable during exercise

a. is completely normal and is to be expected.
b. means that you're completely out of shape.
c. can indicate that there's a problem with your heart.

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.