Forces - GCSE Physics 0.0 / 5 ? PhysicsForcesGCSEAQA Created by: Max1290Created on: 23-01-23 21:06 Scalar Only has a magnitude but no direction. It is represented by a number and a unit. 1 of 25 Vector Has both magnitude (size) and direction. It is represented by a number, a unit and a direction. 2 of 25 Displacement Distance in a certain direction. 3 of 25 Force Something that can change the speed, shape or direction of an object. 4 of 25 Weight/Gravitational Downward force due to gravity. 5 of 25 Upthrust Upward force exerted onto an object in a fluid. 6 of 25 Friction Resistive force due to two objects in contact. 7 of 25 Air resistance Resistance force due to moving through the air. 8 of 25 Lift Force that uses motion to make an object rise up. 9 of 25 Tension Force exerted through rope when pulling something. 10 of 25 Magnetic Force exerted by magnets on certain metals. 11 of 25 Electrostatic Force that acts between charged objects. 12 of 25 Applied Force exerted on an object by somebody or something (a basic push). 13 of 25 Normal Force that supports an object resting on a surface. 14 of 25 Weight The force of something being acted on due to gravity. It is measured in Newtons (N). 15 of 25 Mass The measure of how much of something there is. It is measured in kilograms (Kg). 16 of 25 Gravitational Field A field surrounding the earth which exerts a force (called weight) on any mass which is in the field. 17 of 25 Proportionality. Mass is directly proportional to weight, 18 of 25 Centre of Mass Single point at which its weight may be considered to act. 19 of 25 Work Done When a force transfers energy to an object and causes it to move a distance. 20 of 25 Elastic Something which returns to its original shape when you remove the force deforming it. 21 of 25 Extension How much the length is increased from the original. 22 of 25 Spring Constant Constant that tells you how elastic the spring is. The stiffer the spring, the greater the spring constant. 23 of 25 Moment When a force causes a turning effect around a pivot. 24 of 25 Equilibrium Where forces and moments are balanced. 25 of 25
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