I believe that the answer is a.
Lifting weights, did this yesterday :))
Answer:
Explanation:
Two forces are 10 N and 30 N. Let us assume that two forces are acting in opposite directions. Net force will be :
F = 30 N - 10 N = 20 N
Now,
F = ma
⇒ a = F/m
So,
So, the acceleration of the object is .
I think its a. i am not sure though.
Scenes the chair wheels are up the person is rolling backwards and if the wheels were down then the person would go forwards
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