Physics 0.0 / 5 ? PhysicsForcesGCSEAQA Created by: castielhowlterCreated on: 04-11-17 21:33 What is the difference between scalar and vector? Scalar only has a size. Vector has a size and direction 1 of 19 Define velocity Speed in a defined direction 2 of 19 What three things can exerting a force do to an object It can change the shape, speed of direction of the object. 3 of 19 Define force A push or a pull 4 of 19 Define displacement A distance travelled in a define direction 5 of 19 GIve three examples of contact forces Friction, air resistance and tension 6 of 19 Give three examples of non-contact forces Gravity, electrostatic forces and magnetic forces 7 of 19 What is force measured in? Newtons 8 of 19 What is weight? The pull of gravity on an object 9 of 19 What is Earth's gravitational field strength? 9.8N/kg 10 of 19 How do you calculate weight? weight= mass x gravitational field strength 11 of 19 Is force scalar or vector? Why? Vector, it has a direction 12 of 19 How do you calculate work done? work done(J) = force (N) x distance moved in direction of force (m) 13 of 19 What is work done measured in? Joules 14 of 19 When is work being done? When an object is moving 15 of 19 Define elastic deformation When an object returns to it's original shape after being stretched 16 of 19 Define inelastic deformation When an object doesn't return to it's original shape after being stretched 17 of 19 Define extension The difference between the stretched and unstretched length of a spring 18 of 19 How do you calculate extension? Force= spring constant x extension 19 of 19
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