According to Newton's second law of motion, if we have a rigid, unchanging mass and we observe it accelerating, what must be happening?

A.

a force is being applied to the mass

B.

a force was once applied but is now not being applied

C.

no force was or is being applied to the mass

D.

the mass MUST be changing

Question

According to Newton's second law of motion, if we have a rigid, unchanging mass and we observe it accelerating, what must be happening?
  
 
 

 
 

  

  A. 
 
a force is being applied to the mass
   
   

 
 

  

  B. 
 
a force was once applied but is now not being applied
   
   

 
 

  

  C. 
 
no force was or is being applied to the mass
   
   

 
 

  

  D. 
 
the mass MUST be changing

anonymous · Answer

think the answer is A but not sure:(

anonymous · Answer

is it a? @ChirstianaLove ?

anonymous · Answer

Its A. a force is being applied to the mass

anonymous · Answer

so i got it correct? @MD175

anonymous · Answer

@Tiggerr Yes. You were right, just clarifying that you were right.
This is why I gave you my medal.