Question

what is an example of rotary motion? the wheels of a skateboard rolling blowing up a balloon running in a straight line bouncing a basketball

Explanation:

Rotary motion is circular movement around a central axis. The wheels of a skateboard rolling involve circular rotation around their axles. Blowing up a balloon is a change in shape (expansion), running in a straight line is translational motion (linear movement), and bouncing a basketball is a combination of translational (up - down) and sometimes rotational (if the ball spins) but the main motion is up - down (not purely rotary).

Answer:

The wheels of a skateboard rolling