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Physics

Work and energy flashcards

QuestionAnswer
What is the equation for work done? force x distance moved
If a book is pushed 2m across the floor, at a force of 100N, how much work is done 200J
What must there be in order for work top be done? A force and a movement
What is Hooke's law? The length of a spring stretched is directly proportional to an amount of force applied to it.
What does elastic mean? can be stretched and returned to it's original shape
What is the law of the conservation of energy? Energy cannot be created or destroyed, only changed from one form to another. The total energy at the start must equal the total energy at the end.
What are some safety features in a car? seatbelts, airbags, laminated glass, lane assist, ABS brakes, front and rear bumpers, crumple zones, collapsible steering column, side impact bars
What is force directly proportional to in Hooke's law? The extension
What are crumple zones? zones on a car that are made from collapsible material that helps to soften the blow from a crash, decreasing the force onto the passengers
What is the equation for kinetic energy? mass x velocity
Created by: willum
 

 



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