Aperson holds a 0.2kg eraser in place against the blackboard by pushing it at angle of 15 degrees below the horizontal 3) a. b. c. draw and label an fbd of the eraser, and calculate the values of all the forces. calculate the static coefficient of friction between the eraser and blackboard. what is the magnitude of the applied force that would allow the eraser to start to slide down?

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