Talk:GCSE Science/Newton's second law

The derivation needs work. V1 -V2 is not the acceletartion :-( it's the change in velocity. The acceleration is the rate of change of velocity. i.e.

(V1 -V2)/t

Theresa

Also, there has been no previous definition of force, which makes this supposed proof spurious. At best, it's a poor way of motivating a definition of force, not a derivation. Someone with a GCSE syllabus needs to correct this.