A wheel has an angular speed of 54 rev/s when it experiences a constant angular acceleration of 64 rev/s2 which causes it to spin FASTER. During this time the wheel completes 81 rev. Determine how long the wheel was experiencing this angular acceleration. Express your answer using appropriate mks units.

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