Aperson walks 4.0 kilometers north, then 4.0 kilometers west. his displacement is closest to

Ben(55 kg) is standing on very slippery ice when junior(25kg) bumps into him. junior was moving at a speed of 8m/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 .

When a neutral charge, comes into contact with a positive charge they repel each other nothing happens the neutral charge becomes negative they attract each other

Aregular polygon has angkes of size 150° each. how many side has the polygon