A simple rearrangement of Newton's second law gives Fnet=ma. Find a net force that is needed to give a 13-kg package an acceleration of 8.0 m/s2 . (Note: The units kg⋅m/s2 and N are equivalent.). Express your answer to two significant figures and include the appropriate units.   Yesterday I asked the same question and the answer I was given is correct but when I input it into my homework on masteringPhysics it said that it was incorrect. Is there something I am missing or is there another way this question can be answered?

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.