P4 Quiz From the grade booster checklist in my revision guide 3.5 / 5 based on 3 ratings ? PhysicsP4GCSEOCR Created by: JennLousieCreated on: 29-03-16 13:45 What do forces occur in? Interaction pairs 1 of 16 What is friction? A force between two moving surfaces 2 of 16 What does friction do? It slows an object down 3 of 16 What is the total of all forces on an object called? The resultant force 4 of 16 What slows down falling objects? Drag forces 5 of 16 What is a safety feature that is designed to reduce forces in collisions? Crumple zones 6 of 16 When is work done? When a force moves an object 7 of 16 What is the conservation of energy? Energy levels remain constant when there's no resistive forces 8 of 16 What happens when forces are balanced? There is no acceleration of the object 9 of 16 What is terminal velocity? The constant maximum speed reached by a falling object 10 of 16 What can a resultant force cause a change in? Momentum 11 of 16 What is transferred when work is done? Energy 12 of 16 What happens in all energy transfers? Some energy is changed into heat energy 13 of 16 What does displacement mean? The distance moved in a specific direction 14 of 16 What is velocity? Speed in a given direction 15 of 16 What are reaction forces? Forces that are opposite and equal 16 of 16
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