Does gravity cause a change in an objects movement

Aboat that travels with constant speed of 6.10 m/s in still water is to go directly across a river. the current in the river flows at 1.95 m/s. (a) at what angle must the boat be steered?

Which force is most responsible for binding together an atom's protons and neutrons? electrostatic gravitational nuclear magnetic

Alfred pushes on a heavy box, but cannot move it. the box has a lot of inertia motion friction gravity