You are cycling around a circular track at a constant speed. Does the magnitude of your acceleration change? The direction? A) The magnitude and direction of the acceleration change.
B) The magnitude of the acceleration changes. But the direction doesn't.
C) The magnitude and direction of the acceleration don't change.
D) The magnitude of the acceleration doesn't change. But the direction does.

A) The magnitude and direction of the acceleration change.

Explanation:

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