Keywords 0.0 / 5 ? PhysicsG481: MechanicsASOCR Created by: amy_ball98Created on: 16-03-15 19:13 Scalar A quantity that only has magnitude. For example, time or speed. 1 of 23 Vector A quantity that has both magnitude and direction. For example, force or velocity. 2 of 23 Displacements The distance from one point to another. 3 of 23 Instantaneous speed The speed of an object at a specific point in time. 4 of 23 Average speed The average speed something travels between two points. 5 of 23 Velocity Speed in a given direction. 6 of 23 Acceleration The change in velocity over time. 7 of 23 Newton The net force which gives a mass of 1Kg an acceleration of 1m/s. 8 of 23 Torque of a couple one of the forces x perpendicular distance between the forces 9 of 23 Moment of a couple Force x perpendicular distance from the pivot 10 of 23 Thinking distance The distance traveled between seeing the danger and applying the brakes 11 of 23 Braking distance The distance the car travels once the brakes have been applied. 12 of 23 Stopping distance Thinking distance + Braking distance 13 of 23 Work done Force x distance moved in the direction of the force 14 of 23 Joule Energy required to move a weight of 1N a distance of 1m. 15 of 23 Power The rate of doing work 16 of 23 Watt The power required to move 1N through a distance of 1m in 1s. 17 of 23 Stress Force ÷ cross sectional area 18 of 23 Strain Extension ÷ original length 19 of 23 Young's modulus Stress ÷ Strain 20 of 23 Ultimate tensile strength Maximum stress a material can withstand before breaking. 21 of 23 Elastic deformation A temporary shape change that reverses once the force is removed. 22 of 23 Plastic deformation When a material cannot return to its original length. 23 of 23
Comments
No comments have yet been made