The position of a particle according to the appropriate coordinate set can be vectorially specified in meters as r=i(sin2πt)-16j(1-e^((-t)⁄4) )+kt^2/4 where t is the movement time of particle in seconds after passing its origin. If the mass of the particle is (2,3) kg, calculate the x component of its R force and the magnitude of its resultant force R at time t = 4s.

the answer is neither ball has a charge.

because if they were both positively charged, they will repel each other.

if they were positively and negatively charged, they will seek.

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

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