Test 1/16/26
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What is the definition of energy?
The ability to do work or produce change Energy can exist in various forms and is essential for performing tasks.
Factors that affect the amount of kinetic energy are ______.
mass and speed Kinetic energy depends on the mass of an object and its velocity.
What is the formula for calculating kinetic energy?
KE = 1/2 mv² Where m is mass and v is speed.
If a car has a mass of 5200kg and it’s moving at a speed of 30m/s, what is its kinetic energy?
2,340,000 J Kinetic energy is calculated using the formula KE = 1/2 mv².
What is the definition of potential energy?
Energy stored due to an object’s position or shape Potential energy can be gravitational, elastic, or other forms.
What is the definition of gravitational potential energy?
Energy stored due to an object’s height above the ground It is calculated based on weight and height.
What is the formula for calculating gravitational potential energy?
GPE = weight × height And if for weight it kg then it’s weight x height x 9.8 Units are in Joules (J).
If a vase is 15kg and is sitting on a shelf that is 5m off of the ground, what is its gravitational potential energy?
735 J GPE is calculated as GPE = weight × height.
If a person weighs 30N and is 5m off the ground on a bleacher, what is their gravitational potential energy?
150 J GPE = weight × height, where weight is in Newtons.
What is the definition of elastic potential energy?
Energy associated with objects that can be compressed or stretched Examples include rubber bands and springs.