physics paper 2 - forces 0.0 / 5 ? PhysicsForcesGCSEAQA Created by: erinleliaxxCreated on: 27-03-18 17:21 What is a scalar quantity ? Has magnitude only (size) 1 of 19 What is a vector quantity ? Has magnitude and direction 2 of 19 What quantities are forces ? vectors 3 of 19 What are contact forces ? When the objects are actually touching 4 of 19 What are examples of contact forces ? friction , air resistance , tension and upthrust 5 of 19 What is a non contact force ? When the objects aren't tounching 6 of 19 What are some examples of non contact forces ? gravtional force , electrostatic force and magnetic force 7 of 19 What is a resultant force ? when an object and more than one forces acting on it the forces are seen as a single force that have the same effect 8 of 19 What is work done ? When a force causes an object to move 9 of 19 What is meat by elastically deformed ? when a object goes back to its normal shape after the forces are removed 10 of 19 What is meant by inelasticity deformed ? When a object doesn't go back to its normal shape after the forces have been taken away 11 of 19 Extension of an elastic object It is directly proportional to the applied force 12 of 19 What happens when an object has reached the limit of proportionality? the relationship becomes non-linear 13 of 19 What is spring constant ? How easy it is to stretch or compress a spring 14 of 19 What is a moment force ? when a force causes an object to rate about a pivot point 15 of 19 What can levers and gears be used for ? to transmit the rotational effects of forces and magnify the size of the applied forces 16 of 19 What is a fluid ? Can be a gas or a liquid 17 of 19 Fluid and pressure ? If the pressure acts on a bigger area it will produce a larger force 18 of 19 what is pressure caused by ? particles colliding with a surface 19 of 19
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