A bicycle is heading West and traveled 12000m in 300s before being forced to apply the brakes. He skids for another 4000m in 200s and finally stops. What was the car's final velocity?

Which of the following is an example of units for speed

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s

What changes occur in the brain during the teenage years? 25 points, someone me out!a.) thinking becomes slower as the brain grows larger. b.) connections between neurons become stronger and faster. c.) unused neurons fuse together to form larger, better functioning neurons. d.) more neurons are developed.