1.) A roller coaster travels on a frictionless track as shown in the illustration.
a.) If the speed of the car at Pt A is 5.0 m/s, what is the speed at Pt B
(More in the photo provided)
![1 A roller coaster travels on a frictionless track as shown in the illustration a If the speed of the car at Pt A is 50 ms what is the speed at Pt B More in the class=](https://us-static.z-dn.net/files/da6/1c1aaf51d27866c98bec6d99b158001e.png)