Forces always act alone. true or false

Acar is going 5m/s around a bend with a radius of 10m/s why is the accelerant?

A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n

How would a small bar magnet be oriented when placed at position x?