The cable segment attached to the spring is at an angle of ϕ=20.0° from the ground. The spring has a spring constant of k=16.5 kN/m. The pulley is attached to the ceiling by rod BD that forms an angle θ=55.0° with the ceiling. The hanging mass causes a tension of 3325 N in rod BD.
What is the displacement of the spring?

found in the nucleus

has mass of one amu

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