Consider a particle moving along the x-axis whose velocity as a function of time is dx dt g 1+02t2 (1) where g is a constant. (a) calculate the components of the particle's 4-velocity. (b) express x and t as functions of the proper time t along the trajectory. (c) what are the components of the 4-force and the 3-force acting on the particle?

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

friction

explanation:

they us to move forward and backwards