A tuba can play a lower note than a flute because A. It vibrates less air
B. There is more room for the air to spread out
C. It vibrates more air

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.