Kirstin, Carrie, and Perry each have cyber race-cars.
Kirstin starts at point "X" on the circular track going clockwise.
Perry starts at point "X" going counter-clockwise.
Carrie starts at point "Y" which is 180 degrees from point "X", going
clockwise.
Kirstin, Perry, and Carrie all end up in a mega crash
at Point "Z", located 45 degrees counter-clockwise from "X" during Kirstin's
first circuit around the track.
If Kirstin was traveling a mere 100 km/hour. How fast were Perry and Carrie going?
BTW: No one was injured in the crash because even in cyber race-cars, everyone was wears a seat-belt.
The Great Cyber Race-Car Crash