a simple machine consisting of a circular frame with spokes (or a solid disc) that can rotate on a shaft or axle (as in vehicles or other machines)
a mechanical device consisting of bars at either end of a vehicle to absorb shock and prevent serious damage
bearings containing small metal balls
gets moisture/dirt off windshield and sometimes back window
motor that converts thermal energy to mechanical work
Flickr Creative Commons Images
Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.