Clarification in the definition of force

Main Question or Discussion Point

\According to Newton's second law, force is defined as rate of change of momentum or force is defined as product of mass into acceleration, I both of these definitions are same and right.

My questions are,
(1) how can i prove this two definitions are same?
 

Answers and Replies

4
0
F=dp/dt=d(mv)/dt=m(dv/dt)=ma
Actually, these two definitions are not equivalent in the framework of special relativity.
 

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