Worksheet
Energy/Work Vocabulary
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This assignment is NOT "view correct answers," it is a single submission graded for correctness. The answers can be found in the two resource lessons that we discussed this week. Some terms may be used more than once.
Mechanical Energy
Work and Energy
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 ½mv
^{2}
.
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:
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