A truck moving due south takes a turn and starts moving towards east while maintaining the same speed. Its velocity remains constant.
It covers unequal distances in equal intervals of time.
Its velocity changes
None of the above

Its velocity changes

Explanation:

When the truck changes direction, its velocity changes.

Velocity is a vector quantity that specifies the magnitude of motion and direction it is taking.

When direction changes, the velocity of a body will also change. This is unlike speed which is a scalar quantity.

 Velocity is the displacement divided by time taken.

no simpler subs form complex ones. synthesise = make

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop