A huge cannon is assembled a planet that does not rotate. This planet has mass M and radius R. The cannon fires a projectile with mass m straight up at speed v0. The projectile goes so high that the acceleration of gravity at its peak is different from that at its launch point. What maximum height above the surface does the projectile reach, in terms of parameters defined in the problem, and physical or mathematical constants

c) up

hope this

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

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000