Science Library - free educational site

Science Library Quiz

Potential and Kinetic Energy

Instructions: answer the questions, check them carefully, and when you are sure they are all right, press submit. The number of correct answers will be displayed.

Question 1: Who first realised that gravity was a force that acted at a distance?




Question 2: How can empty space transmit light?




Question 3: Does sound pass through space? Why?




Question 4: When you run up stairs, your energy is stored as:




Question 5: What is the change in potential energy of a 10kg box carried up stairs 20m by a man running at 4 m/s?




Question 6: Which will have the most energy when allowed to fall back to the ground?




Question 7: A 12.0kg object falls and hits the ground with 0.60 kJ of kinetic energy. From how high was it dropped?




Question 8: Perpetual motion machines are impossible because:




Question 9: At the top of a half-pipe, a skateboarder has maximum potential energy, and zero kinetic. At the bottom of the half-pipe, he has maximum kinetic energy and zero potential. At what height does he have exactly the same potential and kinetic energies?






Question 10: Which has the greatest energy?




Question 11: The first to try a loop in a roller coaster were the French in the 1850s. What was the problem with the first loops?




Question 12: What is the g-force?




Question 13: Where does the energy come from to move a cart around a roller coaster?




Question 14: Where is the g-force the greatest on a track? Roller Coaster







Question 15: At point F on the diagram, what would happen to the cart if the g-force is greater than 1 at this point? Roller Coaster




Question 16: If a 100-kg cart goes down a track with a 30m vertical height, what is the kinetic energy at the bottom?




Question 17: What is the speed of a cart that has come down a 40m descent, if it started with 5 m/s?




Question 18: What allows a cart to travel upside down at the top of a loop?




Question 19: To be weightless at the top of a loop, the centrifugal force is:




Question 20: A cart enters a 20m radius loop at 20 m/s. How much kinetic energy does it have at the top of the loop?




Select a topic for more Physics quizzes

Select a subject for more ScienceLibrary.info quizzes

Latest Item on Science Library

The most recent article is:

Trigonometry

View this item in the topic:

Vectors and Trigonometry

and many more articles in the subject:

Subject of the Week

Mathematics

Mathematics is the most important tool of science. The quest to understand the world and the universe using mathematics is as old as civilisation, and has led to the science and technology of today. Learn about the techniques and history of mathematics on ScienceLibrary.info.

Mathematics

Test your knowledge!

Question: It takes one calorie of energy to heat 1.0 g of water by 1.0 °C. How much energy is needed to raise the temperature of a litre of water by 10 °C?




Go to the article about: Units

ScienceLibrary.info

Quote of the day...

If I agreed with you, we'd both be wrong.

ZumGuy Internet Promotions

IT information forum by Sean Bone