How does the average speed of the atoms in a substance compare to the average speed of the atoms in a substance with a lower temperature?

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 .

Which law represents the thermodynamic statement of the conservation of energy of a system? a. the fourth law b. the first law c. the second law d. the third law

Determine the maximum r-value of the polar equation r =3+3 cos 0