Acceleration: During the initial launch or climb, the roller coaster will accelerate rapidly, gaining speed. The rate of acceleration may vary depending on the type of launch system used, such as a chain lift, hydraulic launch, or flywheel launch.
Deceleration: As the roller coaster goes through hills, turns, and other track elements, it will experience periods of deceleration. This deceleration is caused by a combination of factors such as gravity, friction, and air resistance.
Constant Speed: In certain sections of the track, the roller coaster may maintain a constant speed. This can occur on straightaways or sections with gradual changes in elevation.
The speed of a roller coaster can also be affected by factors such as the weight of the train, the number of riders, and the weather conditions. Typically, the speed of a roller coaster is carefully controlled by the ride's safety systems to ensure a thrilling but safe experience for passengers.