Eli rolled a ball down the cement sidewalk as hard as he could. the ball rolled for less than a minute before it came to a stop. what force acted to slow and finally stop the ball? a. friction, acting in the same direction as the motion of the ball b. the normal force, pushing upward on the ball c. friction, acting in opposition to the motion of the ball d. the normal force, pulling downward on the ball

What statement describes the process of solar nuclear fusion? hydrogen atoms are fused into deuterium, then helium-3, then helium-4, each step giving off large amounts of energy. hydrogen molecules are fused together and become oxygen molecules, giving off large amounts of energy. helium molecules are fused together and become hydrogen molecules, giving off large amounts of energy. hydrogen atoms are fused into deuterium, then helium-4, then back into hydrogen, each step giving off large amounts of energy.