Answer:
If I am correct, the answer is D. Law of conservation of energy
Explanation:
the potential energy "converts" to kinetic once Luke is in motion.
 
        
             
        
        
        
A. anything less than 3.0 magnitude on a richters scale usually can't be felt by humans but instruments can pick it up.
 
        
                    
             
        
        
        
Most appropriate unit of measurement should be centimetres, cm.
        
                    
             
        
        
        
Answer:
C. Why you must push harder to move a car farther.
Explanation:
Newton's Second Law of Motion states that the acceleration of a physical object is directly proportional to the net force acting on the physical object and inversely proportional to its mass. 
Mathematically, it is given by the formula;
 
 
Hence, Newton's 2nd Law explains why you must push harder to move a car farther because of its mass. Thus, it is important to increase the force that the engine provides and decrease the mass of the car.