Roller Coasters are constantly accelerating and decelerating, therefore they don't have a constant speed. However, their average speed can be calculated by dividing the total distance covered by the roller coaster on the track by the total time it takes to complete one ride on the track.
How do engineers force a roller coaster to speed up
Some roller coaster rides can go faster than the average speed of cars. The fastest roller coaster ride in the world is the Formula Rossa in the UAE. It goes 149 mph.
74mph is the top speed
It depends on the roller coaster's height,speed,and location. :p
It depends on the type of, speed of and distance of the roller coaster.
The "average", vanilla roller coaster? Their top speed in descents is about 60 MPH. But some of the newer, death-wish "can-you-top-this" roller coasters? I wouldn't even hazard a guess!
No
in a Roller Coaster the first drop must be the tallest or in other words the fastest more speed that the roller coaster gains at the start make it allot more fun.
15 mph
Slopes and large hills!
A roller coaster increases kinetic energy when it is going downhill, as gravity is pulling it down and accelerating it. The potential energy is converted into kinetic energy as the roller coaster gains speed.
Things like descending a very tall hill or turns affect the speed of a roller coaster. Riding down the hills increases speed, and turns slow the coaster down.