a 1500N boy and his bike are traveling 12 m/s when he slams on his brakes and stops at his friends house. How much impulse is required to produce this change in momentum? (-1800Ns)

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

the ima (higher than 1m) will be greater than the ima with the height of 1m.