According to Newton’s second law of motion:
F=ma
=80*0.5
=40N
        
             
        
        
        
I searched for you and i think its Velocity. it would be nice if u put the answer choices though
        
                    
             
        
        
        
The wavelength would be 2.980044314115. Reduced it would be 2.980 or just 2.98.
        
                    
             
        
        
        
Answer:
since -6 lasted for 5 seconds, multiplying both would result in -30
3 lasted for 10 seconds, so multiplying both would give +30
average = ( 30 + (-30) ) / 2
30 -30 is already equal to zero, so the answer should be 0