Velocity and Acceleration

This past summer I went to Las Vegas with my mom, sister, and Blake. While we were there, I rode the roller coaster at Circus Circus with my sister. This ride showed the physics of velocity and acceleration. Velocity describes the speed and direction of an object, while acceleration is any change in velocity over a period of time. The roller coaster's velocity was zero at the start of the ride. As we started moving up the track, it started to accelerate from rest to a slow speed and then maintained that speed for a constant velocity until we got to the top of the slope. After reaching the top, we accelerated again until we reached the peak velocity and couldn't accelerate anymore. We maintained this velocity throughout the ride until we started to slow down and experienced negative acceleration towards the end. The ride finally came to a stop for zero velocity again. We moved in the forward direction for the entire ride. We ended at the same starting position as the beginning, so there was no displacement during this ride.