A. Equal and opposite
For every action, there is an equal and opposite reaction
        
             
        
        
        
Answer:
256.68m
Explanation:
that is the procedure above
 
        
             
        
        
        
Answer:
a = 4.9(1 - sinθ - 0.4cosθ)
Explanation:
Really not possible without a complete setup.
I will ASSUME that this an Atwood machine with two masses (m) connected by an ideal rope passing over an ideal pulley. One mass hangs freely and the other is on a slope of angle θ to the horizontal with coefficient of friction μ. Gravity is g
                                      F = ma
mg - mgsinθ - μmgcosθ = (m + m)a
       mg(1 - sinθ - μcosθ) = 2ma
       ½g(1 - sinθ - μcosθ) = a
maximum acceleration is about 2.94 m/s² when θ = 0
acceleration will be zero when θ is greater than about 46.4°
 
        
             
        
        
        
Answer:
I think no 3 is false 
and 4 is true
and the the ones you did are correct
if wrong correct me pls
 
        
                    
             
        
        
        
Density<span> is the </span>mass<span> of an object </span>divided<span> by its </span>volume<span>. So the answer would be Yes. Hope it helps! (:</span>