Answer:
The displacement was 320 meters.
Explanation:
Assuming projectile motion and zero initial speed (i.e., the object was dropped, not thrown down), you can calculate the displacement using the kinematic equation:

The displacement was 320 meters.
 
        
             
        
        
        
Answer:
scratching a surface to make it rougher 
increasing the size of a flying object 
adding extra weight to an object 
Explanation:
 
        
                    
             
        
        
        
Answer:
Performance tests can be used to see if an implemented training program is working for the athlete or if the program needs alterations. They can also assess current abilities in specific athletic areas to help the athlete choose what to focus their energy on improving.
Explanation: