Answer:
How do Newton's laws of motion explain why it is important to keep the ice smooth on a hockey rink so that players can pass a puck as quickly as possible? Smooth ice reduces the unbalanced forces that would slow the hockey puck. A skydiver falls toward the ground at a constant velocity.
Explanation:
 
        
                    
             
        
        
        
Answer:
 Tendons connect the skeletal system to the muscular system by attaching muscle to bone. When muscle contracts, the tendon acts on the bone, causing movement. Joints, the point at which two or more bones connect, can be fixed, slightly movable, or freely movable. 
 
        
             
        
        
        
Answer:
The answer to your question is below
Explanation:
Physical properties are the properties in which there is no change in the nature of the substance  but there is a change in the physical state.
Chemical properties are the properties in which the substance changes its nature. A new substance is formed.
A. Ice melts in the sun. Physical p.
B. Copper is a shiny metal. Physical p.
C. Paper can burn. Chemical p.
D. A silver knife can tarnish. Physical p.
E. A magnet removes iron particles from a mixture. Physical p.
 
        
             
        
        
        
D will because water just turns from liquid to a gas by adding heat. That is a physical change. The other equations are chemical changes.
        
             
        
        
        
Slavery played a big role in this. the confederacy allowed slavery while the union was oppose to it.