|299,792,458 Meters per Second|
|Quickly & correctly answer 75 skill problems in a row (time limit depends on skill difficulty)|
|Energy point(s) awarded||5000|
299,792,458 Meters per Second is an Earth badge. To earn it, the user has to consecutively submit 75 correct answers in any exercise within the time limit, which depends on the difficulty of the skill. Having a slow or incorrect answer means that the user has to start all over again. User can find the time limits for each exercise here. This badge can be found here on Khan Academy.
This badge, as all speed badges, can be earned only once per exercise.
- Before Spring 2011, 299,792,458 Meters per Second was a Sun badge. As more exercises came along, the badge got changed into an Earth badge.
- Users can achieve Tesla by earning this badge about 300 times.
- 299,792,458 meters per second is the speed of light.