Problem 4: A ball is thrown upwards at an angle of 25° from the roof of a 20.0 m tall building and lands a distance of 25 m from the base of the building. Assume that it is in free-fall throughout. A) Determine the initial speed of the ball in m/s. B)Find the maximum height in meters that the ball reached base of the building. Assume that it is in free-fall through

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

higher potential

explanation:

because it is in a high speed so it must move into a of high potential