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SYSTEMS PREPARATION 2008 - QUESTIONS

V. Ryan 2008

 

1. Roller coasters are found in theme parks throughout the world. Electricity is used to drive the large motors that pull the carriages up the tracks and gravity allows the carriages to pick up sped on the way down. Complete the systems diagram below to show the main energy changes.

 
POSSIBLE ANSWER

2. What is Kinetic Energy ?
 
 

ANSWER

The energy a body possesses because it is moving.
   

3. The carriage of a roller coaster seen below is at the top of an incline. At any point it could roll downwards, gathering speed. What is potential energy?


Potential energy is:
 
 
 

ANSWER

The energy which a body has because of its position, eg. a coiled spring or a train at the top of a hill.
   

4. The carriage at the bottom of the roller coaster incline has a special gear system. On the diagram the gear system is marked A and B. What are the correct names for parts A and B ?

 

PART A:
 
PART B:
 

ANSWERS

PART A: Pinion
PART B: Rack
   

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