<span>As the body rises up its gravitational potential energy increases but its kinetic energy decreases.
As a body falls its gravitational potential energy decreases but it's kinetic energy increases</span>
        
             
        
        
        
Answer:
It is because it is a unit of Power(which is a derived quantity) 
 
        
             
        
        
        
Centrifugal force is not a real force.  
When you move around a curve, there IS a real force pulling you 
around the curve.  Since your body wants to go straight, it feels as if 
there's a force trying to pull you away from the curve.  But there isn't.
That feeling of a force is greater when your speed around the curve 
is greater, or when the curve is tighter, i.e. smaller radius. 
        
                    
             
        
        
        
<span>The green car traveled a shorter distance, but the displacement of the cars was equal.</span>
        
                    
             
        
        
        
We know that when you heat up calcium sulfate all the water has evaporated from it. That means that the mass of water that was initially in the sulfate is the difference in mass of the sulfate before and after the heating.

In order to <span>get a percentage by mass we simply divide this number by the initial amount of sulfate:
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