Sunday

December 21, 2014

December 21, 2014

Posted by **aly** on Sunday, April 24, 2011 at 6:29pm.

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 roller coaster at point B?

3. What is the potential energy and the kinetic energy of the roller coaster at point C?

4. Derive an expression for the speed of the cart using the variables E, m, g, and h.

5. Determine the speed of the roller coaster at D.

- physics -
**Damon**, Sunday, April 24, 2011 at 6:46pmreference potential energy to ground

U = m g h

Ke = (1/2) m v^2

1

E = U + Ke = 1000*9.8*30 + 500 (1.8)^2

2

E = 0 + Ke

so (1/2) m (Vat B)^2 = E from 1 above

3

same old E from part 1

E = 1000*9.8*25 + Ke at C

4

(1/2) m v^2 = E - m g h

5

(1/2) m v^2 = E - m g h

**Answer this Question**

**Related Questions**

Physics - Consider a roller coster car moving along a track from point A to ...

Physics - A roller-coaster vehicle has a mass of 506 kg when fully loaded with ...

math - Stephanie is working on a graph that represents the path of a roller ...

Physics - Problem 2- A 350 kg roller coaster starts from rest at point A and ...

physics - I have a diagram of a roller coaster. It starts at a height of 100m ...

physics - Suppose the roller coaster in Fig. 6-41 (h1 = 38 m, h2 = 11 m, h3 = 25...

physics - Suppose the roller coaster in Fig. 6-41 (h1 = 34 m, h2 = 10 m, h3 = 30...

Physics - Suppose the roller coaster in Fig. 6-41 (h1 = 30 m, h2 = 11 m, h3 = 20...

physics - In the figure, a frictionless roller coaster car of mass m = 938 kg ...

physics - In the figure, a frictionless roller coaster car of mass m = 672 kg ...