As an expert witness, a forensic scientist is ethically responsible for doing what?

An expert witness is a person, who has specific knowledge of a particular field, such a person can give specific opinion about a particular evidence found at the scene of crime. An expert can be an ordinary plumber or electrician or may be well qualified forensic scientists, who can give opinion about fields of serology, fingerprinting, DNA analysis and other fields which can be related to criminal investigation.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min