Question

if two forces f1 =(2n)i +(-6n)j and f2 which is unknown act on a particle movingit at a constant speed of v=(3m/s)i - (4m/s)j (a) what is the otherforce (b) what is the rate at which work is done by each of these forces assuming that the same is produced

Answer 1

the write answer is v = (1m/s)
the correct answer so plzz
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