# physics

If the coaster is going to make it to point C it needs to start with some initial velocity. If point C is 21 meters high and the coaster starts at a height of 20 meters, what would its initial velocity need to be if no energy is lost to friction?

1. 👍 0
2. 👎 0
3. 👁 123
1. 1/2 m v^2=mg*(21-20)

solve for v

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physics

A roller coaster of mass 1000.0 kg passes point A with a speed of 1.80 m/s? point a= 30m point b= 0m point c= 25m point d= 12m 1. What is the total mechanical energy of the roller coaster at point A? 2. What is the speed of the

asked by aly on April 24, 2011
2. ### Science

2. How does the gravitational potential energy of Coaster A compare with that of Coaster B? An image shows two roller coasters. At the left, coaster A is positioned at the top of a 30 meter hill. To the right, coaster B is atop a

asked by Luna on December 6, 2018
3. ### Physics

A roller coaster works by gravitational energy. The coaster car is pulled up to a high point and then released, rolling downwards on the track through all manners of curves and loops. I have a short roller coaster car that I pull

asked by Shin on May 6, 2013
4. ### math

Stephanie is working on a graph that represents the path of a roller coaster. The point (0, 840) represents the point at which the roller coaster first begins to drop at a constant rate. The point (15, 240) represents a point

asked by hannah on January 14, 2014
5. ### Science

The Millennium Force is the highest roller coaster in North America. It reached a maximum height to 94.5 m. The total mass of the roller coaster car and its passengers is 1380 kg. The speed of the roller coaster is 41.1 m/s at its

asked by alisha on June 1, 2017
1. ### Physics

A 500 kg roller coaster starts from rest at point A (Fig. 6.29) and rolls freely (no friction) to point B where the brakes are applied and it slides along horizontally with a frictional force of 410 N. How far does the coaster

asked by Anonymous on February 26, 2014
2. ### Physics

The loaded coaster has a mass of 2000 kg. The starting point of the run (B) is 25 m above point A; the run from B to C is 120 m long, the run from C to D is 150 m. At D, brakes are applied, bringing the coaster to a halt X m

asked by Arkonite on February 3, 2020
3. ### Physics

Problem 2- A 350 kg roller coaster starts from rest at point A and slides down the frictionless loop-the-loop shown in the figure. a) How fast is the roller coaster moving at point B? b) How hard does it press against the track at

asked by Anonymous on December 12, 2013
4. ### Physics 1

Consider a roller coaster that moves along the track shown in the figure below. Assume all friction is negligible and ignore the kinetic energy of the roller coaster's wheels. Assume the roller coaster starts with a speed of 19

asked by John on October 8, 2012
5. ### Repost-Physics 1

Consider a roller coaster that moves along the track shown in the figure below. Assume all friction is negligible and ignore the kinetic energy of the roller coaster's wheels. Assume the roller coaster starts with a speed of 19

asked by John on October 9, 2012

More Similar Questions