1. This scalar quantity is defined as the ability to do work.

2. Saying that the answer to #1 is a "scalar quantity" means that it does not change with the object's ____  of motion, it only represents its numerical size.

3. This type of energy is caused by an object's motion and can be calculated using the formula ½mv2.

4. A ____  is equal to a kg (m/sec)2 and represents the unit in which energy and work are measured.

5. How much kinetic energy would a 2-kg block moving towards the right at 10 m/sec have?

6. How much kinetic energy would a 2-kg block thrown straight up into the air at 10 m/sec have at the apex of its trajectory?

7a. This type of energy is caused by an object's position in a gravitational field. It can be calculated using the formula mgh.

7b. What does the quantity mg in the formula to 7a represent?

8a. How much potential energy would a 1-kg ball have when it is initially released 2 meters above the ground?

8b. How much potential energy would a 1-N ball have when it is initially released 2 meters above the ground?

9. What quantity is defined as the product of force times displacement?

10. What unit is used to measure this quantity? (question #9)

11. When a block is dragged across a table by a string that is parallel to the surface of a table how much work is done by the object's weight?

12. When external forces do work on an object that work will change the object's ____ energy.

13. When path-independent, or conservative, forces do work on an object, that work will change the object's ____ energy.

14. Conservation of Energy only applies when there are no ____ forces acting on the system.

15. ____ is defined at the rate at which work is done.

16. What unit is used to measure this quantity? (question #15)

Substitute Certification: