{"result":{"text":"W subscript a g e n t end subscript equals W subscript F subscript 0 end subscript equals F subscript 0 cos theta. l\nB y space c o n s e r v a t i o n space o f space t o t a l space e n e r g y\nF subscript 0 cos theta l equals 1 half m v subscript 1 superscript 2 comma space space space v subscript 1 equals square root of fraction numerator 2 l over denominator m end fraction F subscript 0 cos theta end root"},"status":"ok"}